21509663

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{383}}^1$

素因数の和:574

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 3705313

約数列:

[1, 7, 71, 113, 383, 497, 791, 2681, 8023, 27193, 43279, 56161, 190351, 302953, 3072809, 21509663]

約数ペア:

[(1, 21509663), (7, 3072809), (71, 302953), (113, 190351), (383, 56161), (497, 43279), (791, 27193), (2681, 8023)]