21804881

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{601}}^1$

素因数の和:752

約数の個数: 16

約数和(自身を含む): 25659648

約数和(自身を除く): 3854767

約数列:

[1, 7, 71, 73, 497, 511, 601, 4207, 5183, 36281, 42671, 43873, 298697, 307111, 3114983, 21804881]

約数ペア:

[(1, 21804881), (7, 3114983), (71, 307111), (73, 298697), (497, 43873), (511, 42671), (601, 36281), (4207, 5183)]