20910120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 256

約数和(自身を含む): 81838080

約数和(自身を除く): 60927960

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, 73, 77, 84, 88, 93, 105, 110, 120, 124, 132, 140, 146, 154, 155, 165, 168, 186, 210, 217, 219, 220, 231, 248, 264, 280, 292, 308, 310, 330, 341, 365, 372, 385, 420, 434, 438, 440, 462, 465, 511, 584, 616, 620, 651, 660, 682, 730, 744, 770, 803, 840, 868, 876, 924, 930, 1022, 1023, 1085, 1095, 1155, 1240, 1302, 1320, 1364, 1460, 1533, 1540, 1606, 1705, 1736, 1752, 1848, 1860, 2044, 2046, 2170, 2190, 2263, 2310, 2387, 2409, 2555, 2604, 2728, 2920, 3066, 3080, 3212, 3255, 3410, 3720, 4015, 4088, 4092, 4340, 4380, 4526, 4620, 4774, 4818, 5110, 5115, 5208, 5621, 6132, 6424, 6510, 6789, 6820, 7161, 7665, 8030, 8184, 8680, 8760, 9052, 9240, 9548, 9636, 10220, 10230, 11242, 11315, 11935, 12045, 12264, 13020, 13578, 13640, 14322, 15330, 15841, 16060, 16863, 18104, 19096, 19272, 20440, 20460, 22484, 22630, 23870, 24090, 24893, 26040, 27156, 28105, 28644, 30660, 31682, 32120, 33726, 33945, 35805, 40920, 44968, 45260, 47523, 47740, 48180, 49786, 54312, 56210, 57288, 61320, 63364, 67452, 67890, 71610, 74679, 79205, 84315, 90520, 95046, 95480, 96360, 99572, 112420, 124465, 126728, 134904, 135780, 143220, 149358, 158410, 168630, 174251, 190092, 199144, 224840, 237615, 248930, 271560, 286440, 298716, 316820, 337260, 348502, 373395, 380184, 475230, 497860, 522753, 597432, 633640, 674520, 697004, 746790, 871255, 950460, 995720, 1045506, 1394008, 1493580, 1742510, 1900920, 2091012, 2613765, 2987160, 3485020, 4182024, 5227530, 6970040, 10455060, 20910120]

約数ペア:

[(1, 20910120), (2, 10455060), (3, 6970040), (4, 5227530), (5, 4182024), (6, 3485020), (7, 2987160), (8, 2613765), (10, 2091012), (11, 1900920), (12, 1742510), (14, 1493580), (15, 1394008), (20, 1045506), (21, 995720), (22, 950460), (24, 871255), (28, 746790), (30, 697004), (31, 674520), (33, 633640), (35, 597432), (40, 522753), (42, 497860), (44, 475230), (55, 380184), (56, 373395), (60, 348502), (62, 337260), (66, 316820), (70, 298716), (73, 286440), (77, 271560), (84, 248930), (88, 237615), (93, 224840), (105, 199144), (110, 190092), (120, 174251), (124, 168630), (132, 158410), (140, 149358), (146, 143220), (154, 135780), (155, 134904), (165, 126728), (168, 124465), (186, 112420), (210, 99572), (217, 96360), (219, 95480), (220, 95046), (231, 90520), (248, 84315), (264, 79205), (280, 74679), (292, 71610), (308, 67890), (310, 67452), (330, 63364), (341, 61320), (365, 57288), (372, 56210), (385, 54312), (420, 49786), (434, 48180), (438, 47740), (440, 47523), (462, 45260), (465, 44968), (511, 40920), (584, 35805), (616, 33945), (620, 33726), (651, 32120), (660, 31682), (682, 30660), (730, 28644), (744, 28105), (770, 27156), (803, 26040), (840, 24893), (868, 24090), (876, 23870), (924, 22630), (930, 22484), (1022, 20460), (1023, 20440), (1085, 19272), (1095, 19096), (1155, 18104), (1240, 16863), (1302, 16060), (1320, 15841), (1364, 15330), (1460, 14322), (1533, 13640), (1540, 13578), (1606, 13020), (1705, 12264), (1736, 12045), (1752, 11935), (1848, 11315), (1860, 11242), (2044, 10230), (2046, 10220), (2170, 9636), (2190, 9548), (2263, 9240), (2310, 9052), (2387, 8760), (2409, 8680), (2555, 8184), (2604, 8030), (2728, 7665), (2920, 7161), (3066, 6820), (3080, 6789), (3212, 6510), (3255, 6424), (3410, 6132), (3720, 5621), (4015, 5208), (4088, 5115), (4092, 5110), (4340, 4818), (4380, 4774), (4526, 4620)]