20388641

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{499}}^1$

素因数の和:968

約数の個数: 16

約数和(自身を含む): 25200000

約数和(自身を除く): 4811359

約数列:

[1, 7, 13, 91, 449, 499, 3143, 3493, 5837, 6487, 40859, 45409, 224051, 1568357, 2912663, 20388641]

約数ペア:

[(1, 20388641), (7, 2912663), (13, 1568357), (91, 224051), (449, 45409), (499, 40859), (3143, 6487), (3493, 5837)]