21722405

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{1063}}^1$

素因数の和:1196

約数の個数: 16

約数和(自身を含む): 26914944

約数和(自身を除く): 5192539

約数列:

[1, 5, 61, 67, 305, 335, 1063, 4087, 5315, 20435, 64843, 71221, 324215, 356105, 4344481, 21722405]

約数ペア:

[(1, 21722405), (5, 4344481), (61, 356105), (67, 324215), (305, 71221), (335, 64843), (1063, 20435), (4087, 5315)]