20161250991

素因数分解:

$3^2\times 7^1\times {\mathrm{320019857}}^1$

素因数の和:320019870

約数の個数: 12

約数和(自身を含む): 33282065232

約数和(自身を除く): 13120814241

約数列:

[1, 3, 7, 9, 21, 63, 320019857, 960059571, 2240138999, 2880178713, 6720416997, 20161250991]

約数ペア:

[(1, 20161250991), (3, 6720416997), (7, 2880178713), (9, 2240138999), (21, 960059571), (63, 320019857)]