28320175

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{6703}}^1$

素因数の和:6739

約数の個数: 18

約数和(自身を含む): 38031792

約数和(自身を除く): 9711617

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 6703, 33515, 87139, 167575, 435695, 1132807, 2178475, 5664035, 28320175]

約数ペア:

[(1, 28320175), (5, 5664035), (13, 2178475), (25, 1132807), (65, 435695), (169, 167575), (325, 87139), (845, 33515), (4225, 6703)]