268122920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{515621}}^1$

素因数の和:515645

約数の個数: 32

約数和(自身を含む): 649683720

約数和(自身を除く): 381560800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 515621, 1031242, 2062484, 2578105, 4124968, 5156210, 6703073, 10312420, 13406146, 20624840, 26812292, 33515365, 53624584, 67030730, 134061460, 268122920]

約数ペア:

[(1, 268122920), (2, 134061460), (4, 67030730), (5, 53624584), (8, 33515365), (10, 26812292), (13, 20624840), (20, 13406146), (26, 10312420), (40, 6703073), (52, 5156210), (65, 4124968), (104, 2578105), (130, 2062484), (260, 1031242), (520, 515621)]