39990730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{1087}}^1$

素因数の和:1390

約数の個数: 32

約数和(自身を含む): 77865984

約数和(自身を除く): 37875254

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 283, 566, 1087, 1415, 2174, 2830, 3679, 5435, 7358, 10870, 14131, 18395, 28262, 36790, 70655, 141310, 307621, 615242, 1538105, 3076210, 3999073, 7998146, 19995365, 39990730]

約数ペア:

[(1, 39990730), (2, 19995365), (5, 7998146), (10, 3999073), (13, 3076210), (26, 1538105), (65, 615242), (130, 307621), (283, 141310), (566, 70655), (1087, 36790), (1415, 28262), (2174, 18395), (2830, 14131), (3679, 10870), (5435, 7358)]