18872211

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{661}}^1$

素因数の和:1002

約数の個数: 16

約数和(自身を含む): 26098688

約数和(自身を除く): 7226477

約数列:

[1, 3, 31, 93, 307, 661, 921, 1983, 9517, 20491, 28551, 61473, 202927, 608781, 6290737, 18872211]

約数ペア:

[(1, 18872211), (3, 6290737), (31, 608781), (93, 202927), (307, 61473), (661, 28551), (921, 20491), (1983, 9517)]