20156821640

素因数分解:

$2^3\times 5^1\times {\mathrm{503920541}}^1$

素因数の和:503920552

約数の個数: 16

約数和(自身を含む): 45352848780

約数和(自身を除く): 25196027140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503920541, 1007841082, 2015682164, 2519602705, 4031364328, 5039205410, 10078410820, 20156821640]

約数ペア:

[(1, 20156821640), (2, 10078410820), (4, 5039205410), (5, 4031364328), (8, 2519602705), (10, 2015682164), (20, 1007841082), (40, 503920541)]