129282920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248621}}^1$

素因数の和:248645

約数の個数: 32

約数和(自身を含む): 313263720

約数和(自身を除く): 183980800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 248621, 497242, 994484, 1243105, 1988968, 2486210, 3232073, 4972420, 6464146, 9944840, 12928292, 16160365, 25856584, 32320730, 64641460, 129282920]

約数ペア:

[(1, 129282920), (2, 64641460), (4, 32320730), (5, 25856584), (8, 16160365), (10, 12928292), (13, 9944840), (20, 6464146), (26, 4972420), (40, 3232073), (52, 2486210), (65, 1988968), (104, 1243105), (130, 994484), (260, 497242), (520, 248621)]