129405980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1129}}^1$

素因数の和:1670

約数の個数: 48

約数和(自身を含む): 297289440

約数和(自身を除く): 167883460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 521, 1042, 1129, 2084, 2258, 2605, 4516, 5210, 5645, 5731, 10420, 11290, 11462, 12419, 22580, 22924, 24838, 28655, 49676, 57310, 62095, 114620, 124190, 248380, 588209, 1176418, 2352836, 2941045, 5882090, 6470299, 11764180, 12940598, 25881196, 32351495, 64702990, 129405980]

約数ペア:

[(1, 129405980), (2, 64702990), (4, 32351495), (5, 25881196), (10, 12940598), (11, 11764180), (20, 6470299), (22, 5882090), (44, 2941045), (55, 2352836), (110, 1176418), (220, 588209), (521, 248380), (1042, 124190), (1129, 114620), (2084, 62095), (2258, 57310), (2605, 49676), (4516, 28655), (5210, 24838), (5645, 22924), (5731, 22580), (10420, 12419), (11290, 11462)]