28720250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{8837}}^1$

素因数の和:8867

約数の個数: 32

約数和(自身を含む): 57906576

約数和(自身を除く): 29186326

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 8837, 17674, 44185, 88370, 114881, 220925, 229762, 441850, 574405, 1104625, 1148810, 2209250, 2872025, 5744050, 14360125, 28720250]

約数ペア:

[(1, 28720250), (2, 14360125), (5, 5744050), (10, 2872025), (13, 2209250), (25, 1148810), (26, 1104625), (50, 574405), (65, 441850), (125, 229762), (130, 220925), (250, 114881), (325, 88370), (650, 44185), (1625, 17674), (3250, 8837)]