15643640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3797}}^1$

素因数の和:3911

約数の個数: 32

約数和(自身を含む): 35549280

約数和(自身を除く): 19905640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 3797, 4120, 7594, 15188, 18985, 30376, 37970, 75940, 151880, 391091, 782182, 1564364, 1955455, 3128728, 3910910, 7821820, 15643640]

約数ペア:

[(1, 15643640), (2, 7821820), (4, 3910910), (5, 3128728), (8, 1955455), (10, 1564364), (20, 782182), (40, 391091), (103, 151880), (206, 75940), (412, 37970), (515, 30376), (824, 18985), (1030, 15188), (2060, 7594), (3797, 4120)]