20687112579

素因数分解:

$3^1\times 7^2\times {\mathrm{140728657}}^1$

素因数の和:140728674

約数の個数: 12

約数和(自身を含む): 32086134024

約数和(自身を除く): 11399021445

約数列:

[1, 3, 7, 21, 49, 147, 140728657, 422185971, 985100599, 2955301797, 6895704193, 20687112579]

約数ペア:

[(1, 20687112579), (3, 6895704193), (7, 2955301797), (21, 985100599), (49, 422185971), (147, 140728657)]