20904962

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:642

約数の個数: 24

約数和(自身を含む): 34292736

約数和(自身を除く): 13387774

約数列:

[1, 2, 13, 26, 127, 169, 254, 338, 487, 974, 1651, 3302, 6331, 12662, 21463, 42926, 61849, 82303, 123698, 164606, 804037, 1608074, 10452481, 20904962]

約数ペア:

[(1, 20904962), (2, 10452481), (13, 1608074), (26, 804037), (127, 164606), (169, 123698), (254, 82303), (338, 61849), (487, 42926), (974, 21463), (1651, 12662), (3302, 6331)]