261327520

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:171

約数の個数: 192

約数和(自身を含む): 696729600

約数和(自身を除く): 435402080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 47, 59, 62, 76, 80, 94, 95, 118, 124, 152, 155, 160, 188, 190, 235, 236, 248, 295, 304, 310, 376, 380, 470, 472, 496, 589, 590, 608, 620, 752, 760, 893, 940, 944, 992, 1121, 1178, 1180, 1240, 1457, 1504, 1520, 1786, 1829, 1880, 1888, 2242, 2356, 2360, 2480, 2773, 2914, 2945, 3040, 3572, 3658, 3760, 4465, 4484, 4712, 4720, 4960, 5546, 5605, 5828, 5890, 7144, 7285, 7316, 7520, 8930, 8968, 9145, 9424, 9440, 11092, 11210, 11656, 11780, 13865, 14288, 14570, 14632, 17860, 17936, 18290, 18848, 22184, 22420, 23312, 23560, 27683, 27730, 28576, 29140, 29264, 34751, 35720, 35872, 36580, 44368, 44840, 46624, 47120, 52687, 55366, 55460, 58280, 58528, 69502, 71440, 73160, 85963, 88736, 89680, 94240, 105374, 110732, 110920, 116560, 138415, 139004, 142880, 146320, 171926, 173755, 179360, 210748, 221464, 221840, 233120, 263435, 276830, 278008, 292640, 343852, 347510, 421496, 429815, 442928, 443680, 526870, 553660, 556016, 687704, 695020, 842992, 859630, 885856, 1053740, 1107320, 1112032, 1375408, 1390040, 1633297, 1685984, 1719260, 2107480, 2214640, 2750816, 2780080, 3266594, 3438520, 4214960, 4429280, 5560160, 6533188, 6877040, 8166485, 8429920, 13066376, 13754080, 16332970, 26132752, 32665940, 52265504, 65331880, 130663760, 261327520]

約数ペア:

[(1, 261327520), (2, 130663760), (4, 65331880), (5, 52265504), (8, 32665940), (10, 26132752), (16, 16332970), (19, 13754080), (20, 13066376), (31, 8429920), (32, 8166485), (38, 6877040), (40, 6533188), (47, 5560160), (59, 4429280), (62, 4214960), (76, 3438520), (80, 3266594), (94, 2780080), (95, 2750816), (118, 2214640), (124, 2107480), (152, 1719260), (155, 1685984), (160, 1633297), (188, 1390040), (190, 1375408), (235, 1112032), (236, 1107320), (248, 1053740), (295, 885856), (304, 859630), (310, 842992), (376, 695020), (380, 687704), (470, 556016), (472, 553660), (496, 526870), (589, 443680), (590, 442928), (608, 429815), (620, 421496), (752, 347510), (760, 343852), (893, 292640), (940, 278008), (944, 276830), (992, 263435), (1121, 233120), (1178, 221840), (1180, 221464), (1240, 210748), (1457, 179360), (1504, 173755), (1520, 171926), (1786, 146320), (1829, 142880), (1880, 139004), (1888, 138415), (2242, 116560), (2356, 110920), (2360, 110732), (2480, 105374), (2773, 94240), (2914, 89680), (2945, 88736), (3040, 85963), (3572, 73160), (3658, 71440), (3760, 69502), (4465, 58528), (4484, 58280), (4712, 55460), (4720, 55366), (4960, 52687), (5546, 47120), (5605, 46624), (5828, 44840), (5890, 44368), (7144, 36580), (7285, 35872), (7316, 35720), (7520, 34751), (8930, 29264), (8968, 29140), (9145, 28576), (9424, 27730), (9440, 27683), (11092, 23560), (11210, 23312), (11656, 22420), (11780, 22184), (13865, 18848), (14288, 18290), (14570, 17936), (14632, 17860)]