261975420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:425

約数の個数: 288

約数和(自身を含む): 989614080

約数和(自身を除く): 727638660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 31, 35, 36, 38, 42, 45, 57, 60, 62, 63, 70, 76, 84, 90, 93, 95, 105, 114, 124, 126, 133, 140, 155, 171, 180, 186, 190, 210, 217, 228, 252, 266, 279, 285, 310, 315, 342, 353, 372, 380, 399, 420, 434, 465, 532, 558, 570, 589, 620, 630, 651, 665, 684, 706, 798, 855, 868, 930, 1059, 1085, 1116, 1140, 1178, 1197, 1260, 1302, 1330, 1395, 1412, 1596, 1710, 1765, 1767, 1860, 1953, 1995, 2118, 2170, 2356, 2394, 2471, 2604, 2660, 2790, 2945, 3177, 3255, 3420, 3530, 3534, 3906, 3990, 4123, 4236, 4340, 4788, 4942, 5295, 5301, 5580, 5890, 5985, 6354, 6510, 6707, 7060, 7068, 7413, 7812, 7980, 8246, 8835, 9765, 9884, 10590, 10602, 10943, 11780, 11970, 12355, 12369, 12708, 13020, 13414, 14826, 15885, 16492, 17670, 19530, 20121, 20615, 21180, 21204, 21886, 22239, 23940, 24710, 24738, 26505, 26828, 29652, 31770, 32829, 33535, 35340, 37065, 37107, 39060, 40242, 41230, 43772, 44478, 46949, 49420, 49476, 53010, 54715, 60363, 61845, 63540, 65658, 67070, 74130, 74214, 76601, 80484, 82460, 88956, 93898, 98487, 100605, 106020, 109430, 111195, 120726, 123690, 131316, 134140, 140847, 148260, 148428, 153202, 164145, 185535, 187796, 196974, 201210, 207917, 218860, 222390, 229803, 234745, 241452, 247380, 281694, 301815, 306404, 328290, 371070, 383005, 393948, 402420, 415834, 422541, 444780, 459606, 469490, 492435, 563388, 603630, 623751, 656580, 689409, 704235, 742140, 766010, 831668, 845082, 919212, 938980, 984870, 1039585, 1149015, 1207260, 1247502, 1378818, 1408470, 1455419, 1532020, 1690164, 1871253, 1969740, 2079170, 2112705, 2298030, 2495004, 2757636, 2816940, 2910838, 3118755, 3447045, 3742506, 4158340, 4225410, 4366257, 4596060, 5821676, 6237510, 6894090, 7277095, 7485012, 8450820, 8732514, 9356265, 12475020, 13098771, 13788180, 14554190, 17465028, 18712530, 21831285, 26197542, 29108380, 37425060, 43662570, 52395084, 65493855, 87325140, 130987710, 261975420]

約数ペア:

[(1, 261975420), (2, 130987710), (3, 87325140), (4, 65493855), (5, 52395084), (6, 43662570), (7, 37425060), (9, 29108380), (10, 26197542), (12, 21831285), (14, 18712530), (15, 17465028), (18, 14554190), (19, 13788180), (20, 13098771), (21, 12475020), (28, 9356265), (30, 8732514), (31, 8450820), (35, 7485012), (36, 7277095), (38, 6894090), (42, 6237510), (45, 5821676), (57, 4596060), (60, 4366257), (62, 4225410), (63, 4158340), (70, 3742506), (76, 3447045), (84, 3118755), (90, 2910838), (93, 2816940), (95, 2757636), (105, 2495004), (114, 2298030), (124, 2112705), (126, 2079170), (133, 1969740), (140, 1871253), (155, 1690164), (171, 1532020), (180, 1455419), (186, 1408470), (190, 1378818), (210, 1247502), (217, 1207260), (228, 1149015), (252, 1039585), (266, 984870), (279, 938980), (285, 919212), (310, 845082), (315, 831668), (342, 766010), (353, 742140), (372, 704235), (380, 689409), (399, 656580), (420, 623751), (434, 603630), (465, 563388), (532, 492435), (558, 469490), (570, 459606), (589, 444780), (620, 422541), (630, 415834), (651, 402420), (665, 393948), (684, 383005), (706, 371070), (798, 328290), (855, 306404), (868, 301815), (930, 281694), (1059, 247380), (1085, 241452), (1116, 234745), (1140, 229803), (1178, 222390), (1197, 218860), (1260, 207917), (1302, 201210), (1330, 196974), (1395, 187796), (1412, 185535), (1596, 164145), (1710, 153202), (1765, 148428), (1767, 148260), (1860, 140847), (1953, 134140), (1995, 131316), (2118, 123690), (2170, 120726), (2356, 111195), (2394, 109430), (2471, 106020), (2604, 100605), (2660, 98487), (2790, 93898), (2945, 88956), (3177, 82460), (3255, 80484), (3420, 76601), (3530, 74214), (3534, 74130), (3906, 67070), (3990, 65658), (4123, 63540), (4236, 61845), (4340, 60363), (4788, 54715), (4942, 53010), (5295, 49476), (5301, 49420), (5580, 46949), (5890, 44478), (5985, 43772), (6354, 41230), (6510, 40242), (6707, 39060), (7060, 37107), (7068, 37065), (7413, 35340), (7812, 33535), (7980, 32829), (8246, 31770), (8835, 29652), (9765, 26828), (9884, 26505), (10590, 24738), (10602, 24710), (10943, 23940), (11780, 22239), (11970, 21886), (12355, 21204), (12369, 21180), (12708, 20615), (13020, 20121), (13414, 19530), (14826, 17670), (15885, 16492)]