21880537

素因数分解:

$7^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 3666215

約数列:

[1, 7, 107, 131, 223, 749, 917, 1561, 14017, 23861, 29213, 98119, 167027, 204491, 3125791, 21880537]

約数ペア:

[(1, 21880537), (7, 3125791), (107, 204491), (131, 167027), (223, 98119), (749, 29213), (917, 23861), (1561, 14017)]