20171944317

素因数分解:

$3^1\times 7^2\times {\mathrm{137224111}}^1$

素因数の和:137224128

約数の個数: 12

約数和(自身を含む): 31287097536

約数和(自身を除く): 11115153219

約数列:

[1, 3, 7, 21, 49, 147, 137224111, 411672333, 960568777, 2881706331, 6723981439, 20171944317]

約数ペア:

[(1, 20171944317), (3, 6723981439), (7, 2881706331), (21, 960568777), (49, 411672333), (147, 137224111)]