18391131

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{20641}}^1$

素因数の和:20664

約数の個数: 20

約数和(自身を含む): 29972184

約数和(自身を除く): 11581053

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 20641, 61923, 185769, 227051, 557307, 681153, 1671921, 2043459, 6130377, 18391131]

約数ペア:

[(1, 18391131), (3, 6130377), (9, 2043459), (11, 1671921), (27, 681153), (33, 557307), (81, 227051), (99, 185769), (297, 61923), (891, 20641)]