128875640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{189523}}^1$

素因数の和:189551

約数の個数: 32

約数和(自身を含む): 307028880

約数和(自身を除く): 178153240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 189523, 379046, 758092, 947615, 1516184, 1895230, 3221891, 3790460, 6443782, 7580920, 12887564, 16109455, 25775128, 32218910, 64437820, 128875640]

約数ペア:

[(1, 128875640), (2, 64437820), (4, 32218910), (5, 25775128), (8, 16109455), (10, 12887564), (17, 7580920), (20, 6443782), (34, 3790460), (40, 3221891), (68, 1895230), (85, 1516184), (136, 947615), (170, 758092), (340, 379046), (680, 189523)]