77984920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149971}}^1$

素因数の和:149995

約数の個数: 32

約数和(自身を含む): 188964720

約数和(自身を除く): 110979800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 149971, 299942, 599884, 749855, 1199768, 1499710, 1949623, 2999420, 3899246, 5998840, 7798492, 9748115, 15596984, 19496230, 38992460, 77984920]

約数ペア:

[(1, 77984920), (2, 38992460), (4, 19496230), (5, 15596984), (8, 9748115), (10, 7798492), (13, 5998840), (20, 3899246), (26, 2999420), (40, 1949623), (52, 1499710), (65, 1199768), (104, 749855), (130, 599884), (260, 299942), (520, 149971)]