2181291

素因数分解:

$3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{431}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 3345408

約数和(自身を除く): 1164117

約数列:

[1, 3, 7, 21, 241, 431, 723, 1293, 1687, 3017, 5061, 9051, 103871, 311613, 727097, 2181291]

約数ペア:

[(1, 2181291), (3, 727097), (7, 311613), (21, 103871), (241, 9051), (431, 5061), (723, 3017), (1293, 1687)]