19901208220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7595881}}^1$

素因数の和:7596021

約数の個数: 24

約数和(自身を含む): 42111569808

約数和(自身を除く): 22210361588

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7595881, 15191762, 30383524, 37979405, 75958810, 151917620, 995060411, 1990120822, 3980241644, 4975302055, 9950604110, 19901208220]

約数ペア:

[(1, 19901208220), (2, 9950604110), (4, 4975302055), (5, 3980241644), (10, 1990120822), (20, 995060411), (131, 151917620), (262, 75958810), (524, 37979405), (655, 30383524), (1310, 15191762), (2620, 7595881)]