20637740

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7877}}^1$

素因数の和:8017

約数の個数: 24

約数和(自身を含む): 43675632

約数和(自身を除く): 23037892

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7877, 15754, 31508, 39385, 78770, 157540, 1031887, 2063774, 4127548, 5159435, 10318870, 20637740]

約数ペア:

[(1, 20637740), (2, 10318870), (4, 5159435), (5, 4127548), (10, 2063774), (20, 1031887), (131, 157540), (262, 78770), (524, 39385), (655, 31508), (1310, 15754), (2620, 7877)]