20995197

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1\times {\mathrm{409}}^1$

素因数の和:724

約数の個数: 16

約数和(自身を含む): 28575360

約数和(自身を除く): 7580163

約数列:

[1, 3, 71, 213, 241, 409, 723, 1227, 17111, 29039, 51333, 87117, 98569, 295707, 6998399, 20995197]

約数ペア:

[(1, 20995197), (3, 6998399), (71, 295707), (213, 98569), (241, 87117), (409, 51333), (723, 29039), (1227, 17111)]