208520815

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{7219}}^1$

素因数の和:7386

約数の個数: 16

約数和(自身を含む): 257320800

約数和(自身を除く): 48799985

約数列:

[1, 5, 53, 109, 265, 545, 5777, 7219, 28885, 36095, 382607, 786871, 1913035, 3934355, 41704163, 208520815]

約数ペア:

[(1, 208520815), (5, 41704163), (53, 3934355), (109, 1913035), (265, 786871), (545, 382607), (5777, 36095), (7219, 28885)]