20644520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^2$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 53184600

約数和(自身を除く): 32540080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 37, 40, 52, 58, 65, 74, 104, 116, 130, 145, 148, 185, 232, 260, 290, 296, 370, 377, 481, 520, 580, 740, 754, 962, 1073, 1160, 1369, 1480, 1508, 1885, 1924, 2146, 2405, 2738, 3016, 3770, 3848, 4292, 4810, 5365, 5476, 6845, 7540, 8584, 9620, 10730, 10952, 13690, 13949, 15080, 17797, 19240, 21460, 27380, 27898, 35594, 39701, 42920, 54760, 55796, 69745, 71188, 79402, 88985, 111592, 139490, 142376, 158804, 177970, 198505, 278980, 317608, 355940, 397010, 516113, 557960, 711880, 794020, 1032226, 1588040, 2064452, 2580565, 4128904, 5161130, 10322260, 20644520]

約数ペア:

[(1, 20644520), (2, 10322260), (4, 5161130), (5, 4128904), (8, 2580565), (10, 2064452), (13, 1588040), (20, 1032226), (26, 794020), (29, 711880), (37, 557960), (40, 516113), (52, 397010), (58, 355940), (65, 317608), (74, 278980), (104, 198505), (116, 177970), (130, 158804), (145, 142376), (148, 139490), (185, 111592), (232, 88985), (260, 79402), (290, 71188), (296, 69745), (370, 55796), (377, 54760), (481, 42920), (520, 39701), (580, 35594), (740, 27898), (754, 27380), (962, 21460), (1073, 19240), (1160, 17797), (1369, 15080), (1480, 13949), (1508, 13690), (1885, 10952), (1924, 10730), (2146, 9620), (2405, 8584), (2738, 7540), (3016, 6845), (3770, 5476), (3848, 5365), (4292, 4810)]