20349680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1151}}^1$

素因数の和:1194

約数の個数: 80

約数和(自身を含む): 53996544

約数和(自身を除く): 33646864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1151, 1360, 1768, 2210, 2302, 3536, 4420, 4604, 5755, 8840, 9208, 11510, 14963, 17680, 18416, 19567, 23020, 29926, 39134, 46040, 59852, 74815, 78268, 92080, 97835, 119704, 149630, 156536, 195670, 239408, 254371, 299260, 313072, 391340, 508742, 598520, 782680, 1017484, 1197040, 1271855, 1565360, 2034968, 2543710, 4069936, 5087420, 10174840, 20349680]

約数ペア:

[(1, 20349680), (2, 10174840), (4, 5087420), (5, 4069936), (8, 2543710), (10, 2034968), (13, 1565360), (16, 1271855), (17, 1197040), (20, 1017484), (26, 782680), (34, 598520), (40, 508742), (52, 391340), (65, 313072), (68, 299260), (80, 254371), (85, 239408), (104, 195670), (130, 156536), (136, 149630), (170, 119704), (208, 97835), (221, 92080), (260, 78268), (272, 74815), (340, 59852), (442, 46040), (520, 39134), (680, 29926), (884, 23020), (1040, 19567), (1105, 18416), (1151, 17680), (1360, 14963), (1768, 11510), (2210, 9208), (2302, 8840), (3536, 5755), (4420, 4604)]