78066640

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1873}}^1$

素因数の和:2407

約数の個数: 40

約数和(自身を含む): 181950408

約数和(自身を除く): 103883768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 1873, 2084, 2605, 3746, 4168, 5210, 7492, 8336, 9365, 10420, 14984, 18730, 20840, 29968, 37460, 41680, 74920, 149840, 975833, 1951666, 3903332, 4879165, 7806664, 9758330, 15613328, 19516660, 39033320, 78066640]

約数ペア:

[(1, 78066640), (2, 39033320), (4, 19516660), (5, 15613328), (8, 9758330), (10, 7806664), (16, 4879165), (20, 3903332), (40, 1951666), (80, 975833), (521, 149840), (1042, 74920), (1873, 41680), (2084, 37460), (2605, 29968), (3746, 20840), (4168, 18730), (5210, 14984), (7492, 10420), (8336, 9365)]