80371640

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{3049}}^1$

素因数の和:3719

約数の個数: 32

約数和(自身を含む): 181170000

約数和(自身を除く): 100798360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1318, 2636, 3049, 3295, 5272, 6098, 6590, 12196, 13180, 15245, 24392, 26360, 30490, 60980, 121960, 2009291, 4018582, 8037164, 10046455, 16074328, 20092910, 40185820, 80371640]

約数ペア:

[(1, 80371640), (2, 40185820), (4, 20092910), (5, 16074328), (8, 10046455), (10, 8037164), (20, 4018582), (40, 2009291), (659, 121960), (1318, 60980), (2636, 30490), (3049, 26360), (3295, 24392), (5272, 15245), (6098, 13180), (6590, 12196)]