20656604

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:713

約数の個数: 24

約数和(自身を含む): 36960000

約数和(自身を除く): 16303396

約数列:

[1, 2, 4, 79, 131, 158, 262, 316, 499, 524, 998, 1996, 10349, 20698, 39421, 41396, 65369, 78842, 130738, 157684, 261476, 5164151, 10328302, 20656604]

約数ペア:

[(1, 20656604), (2, 10328302), (4, 5164151), (79, 261476), (131, 157684), (158, 130738), (262, 78842), (316, 65369), (499, 41396), (524, 39421), (998, 20698), (1996, 10349)]