261519720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 384

約数和(自身を含む): 1029611520

約数和(自身を除く): 768091800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 31, 33, 35, 40, 42, 44, 55, 56, 60, 62, 66, 70, 77, 83, 84, 88, 93, 105, 110, 120, 121, 124, 132, 140, 154, 155, 165, 166, 168, 186, 210, 217, 220, 231, 242, 248, 249, 264, 280, 308, 310, 330, 332, 341, 363, 372, 385, 415, 420, 434, 440, 462, 465, 484, 498, 581, 605, 616, 620, 651, 660, 664, 682, 726, 744, 770, 830, 840, 847, 868, 913, 924, 930, 968, 996, 1023, 1085, 1155, 1162, 1210, 1240, 1245, 1302, 1320, 1364, 1452, 1540, 1660, 1694, 1705, 1736, 1743, 1815, 1826, 1848, 1860, 1992, 2046, 2170, 2310, 2324, 2387, 2420, 2490, 2541, 2573, 2604, 2728, 2739, 2904, 2905, 3080, 3255, 3320, 3388, 3410, 3486, 3630, 3652, 3720, 3751, 4092, 4235, 4340, 4565, 4620, 4648, 4774, 4840, 4980, 5082, 5115, 5146, 5208, 5478, 5810, 6391, 6510, 6776, 6820, 6972, 7161, 7260, 7304, 7502, 7719, 8184, 8470, 8680, 8715, 9130, 9240, 9548, 9960, 10043, 10164, 10230, 10292, 10956, 11253, 11620, 11935, 12705, 12782, 12865, 13020, 13640, 13695, 13944, 14322, 14520, 15004, 15438, 16940, 17430, 18011, 18260, 18755, 19096, 19173, 20086, 20328, 20460, 20584, 21912, 22506, 23240, 23870, 25410, 25564, 25730, 26040, 26257, 27390, 28303, 28644, 30008, 30129, 30876, 31955, 33880, 34860, 35805, 36022, 36520, 37510, 38346, 38595, 40172, 40920, 45012, 47740, 50215, 50820, 51128, 51460, 52514, 54033, 54780, 56265, 56606, 57288, 60258, 61752, 63910, 69720, 70301, 71610, 72044, 75020, 76692, 77190, 78771, 80344, 84909, 90024, 90055, 95480, 95865, 100430, 101640, 102920, 105028, 108066, 109560, 112530, 113212, 120516, 127820, 131285, 140602, 141515, 143220, 144088, 150040, 150645, 153384, 154380, 157542, 169818, 180110, 191730, 198121, 200860, 210056, 210903, 216132, 225060, 226424, 241032, 255640, 262570, 270165, 281204, 283030, 286440, 301290, 308760, 311333, 315084, 339636, 351505, 360220, 383460, 393855, 396242, 401720, 421806, 424545, 432264, 450120, 525140, 540330, 562408, 566060, 594363, 602580, 622666, 630168, 679272, 703010, 720440, 766920, 787710, 792484, 843612, 849090, 933999, 990605, 1050280, 1054515, 1080660, 1132120, 1188726, 1205160, 1245332, 1406020, 1556665, 1575420, 1584968, 1687224, 1698180, 1867998, 1981210, 2109030, 2161320, 2179331, 2377452, 2490664, 2812040, 2971815, 3113330, 3150840, 3396360, 3735996, 3962420, 4218060, 4358662, 4669995, 4754904, 5943630, 6226660, 6537993, 7471992, 7924840, 8436120, 8717324, 9339990, 10896655, 11887260, 12453320, 13075986, 17434648, 18679980, 21793310, 23774520, 26151972, 32689965, 37359960, 43586620, 52303944, 65379930, 87173240, 130759860, 261519720]

約数ペア:

[(1, 261519720), (2, 130759860), (3, 87173240), (4, 65379930), (5, 52303944), (6, 43586620), (7, 37359960), (8, 32689965), (10, 26151972), (11, 23774520), (12, 21793310), (14, 18679980), (15, 17434648), (20, 13075986), (21, 12453320), (22, 11887260), (24, 10896655), (28, 9339990), (30, 8717324), (31, 8436120), (33, 7924840), (35, 7471992), (40, 6537993), (42, 6226660), (44, 5943630), (55, 4754904), (56, 4669995), (60, 4358662), (62, 4218060), (66, 3962420), (70, 3735996), (77, 3396360), (83, 3150840), (84, 3113330), (88, 2971815), (93, 2812040), (105, 2490664), (110, 2377452), (120, 2179331), (121, 2161320), (124, 2109030), (132, 1981210), (140, 1867998), (154, 1698180), (155, 1687224), (165, 1584968), (166, 1575420), (168, 1556665), (186, 1406020), (210, 1245332), (217, 1205160), (220, 1188726), (231, 1132120), (242, 1080660), (248, 1054515), (249, 1050280), (264, 990605), (280, 933999), (308, 849090), (310, 843612), (330, 792484), (332, 787710), (341, 766920), (363, 720440), (372, 703010), (385, 679272), (415, 630168), (420, 622666), (434, 602580), (440, 594363), (462, 566060), (465, 562408), (484, 540330), (498, 525140), (581, 450120), (605, 432264), (616, 424545), (620, 421806), (651, 401720), (660, 396242), (664, 393855), (682, 383460), (726, 360220), (744, 351505), (770, 339636), (830, 315084), (840, 311333), (847, 308760), (868, 301290), (913, 286440), (924, 283030), (930, 281204), (968, 270165), (996, 262570), (1023, 255640), (1085, 241032), (1155, 226424), (1162, 225060), (1210, 216132), (1240, 210903), (1245, 210056), (1302, 200860), (1320, 198121), (1364, 191730), (1452, 180110), (1540, 169818), (1660, 157542), (1694, 154380), (1705, 153384), (1736, 150645), (1743, 150040), (1815, 144088), (1826, 143220), (1848, 141515), (1860, 140602), (1992, 131285), (2046, 127820), (2170, 120516), (2310, 113212), (2324, 112530), (2387, 109560), (2420, 108066), (2490, 105028), (2541, 102920), (2573, 101640), (2604, 100430), (2728, 95865), (2739, 95480), (2904, 90055), (2905, 90024), (3080, 84909), (3255, 80344), (3320, 78771), (3388, 77190), (3410, 76692), (3486, 75020), (3630, 72044), (3652, 71610), (3720, 70301), (3751, 69720), (4092, 63910), (4235, 61752), (4340, 60258), (4565, 57288), (4620, 56606), (4648, 56265), (4774, 54780), (4840, 54033), (4980, 52514), (5082, 51460), (5115, 51128), (5146, 50820), (5208, 50215), (5478, 47740), (5810, 45012), (6391, 40920), (6510, 40172), (6776, 38595), (6820, 38346), (6972, 37510), (7161, 36520), (7260, 36022), (7304, 35805), (7502, 34860), (7719, 33880), (8184, 31955), (8470, 30876), (8680, 30129), (8715, 30008), (9130, 28644), (9240, 28303), (9548, 27390), (9960, 26257), (10043, 26040), (10164, 25730), (10230, 25564), (10292, 25410), (10956, 23870), (11253, 23240), (11620, 22506), (11935, 21912), (12705, 20584), (12782, 20460), (12865, 20328), (13020, 20086), (13640, 19173), (13695, 19096), (13944, 18755), (14322, 18260), (14520, 18011), (15004, 17430), (15438, 16940)]