21496180

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2207}}^1$

素因数の和:2703

約数の個数: 24

約数和(自身を含む): 45255168

約数和(自身を除く): 23758988

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2207, 2435, 4414, 4870, 8828, 9740, 11035, 22070, 44140, 1074809, 2149618, 4299236, 5374045, 10748090, 21496180]

約数ペア:

[(1, 21496180), (2, 10748090), (4, 5374045), (5, 4299236), (10, 2149618), (20, 1074809), (487, 44140), (974, 22070), (1948, 11035), (2207, 9740), (2435, 8828), (4414, 4870)]