210147275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{49739}}^1$

素因数の和:49775

約数の個数: 18

約数和(自身を含む): 282175020

約数和(自身を除く): 72027745

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 49739, 248695, 646607, 1243475, 3233035, 8405891, 16165175, 42029455, 210147275]

約数ペア:

[(1, 210147275), (5, 42029455), (13, 16165175), (25, 8405891), (65, 3233035), (169, 1243475), (325, 646607), (845, 248695), (4225, 49739)]