21057595

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2473}}^1$

素因数の和:2622

約数の個数: 16

約数和(自身を含む): 27431712

約数和(自身を除く): 6374117

約数列:

[1, 5, 13, 65, 131, 655, 1703, 2473, 8515, 12365, 32149, 160745, 323963, 1619815, 4211519, 21057595]

約数ペア:

[(1, 21057595), (5, 4211519), (13, 1619815), (65, 323963), (131, 160745), (655, 32149), (1703, 12365), (2473, 8515)]