18689139

素因数分解:

$3^2\times 7^2\times {\mathrm{42379}}^1$

素因数の和:42399

約数の個数: 18

約数和(自身を含む): 31403580

約数和(自身を除く): 12714441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42379, 127137, 296653, 381411, 889959, 2076571, 2669877, 6229713, 18689139]

約数ペア:

[(1, 18689139), (3, 6229713), (7, 2669877), (9, 2076571), (21, 889959), (49, 381411), (63, 296653), (147, 127137), (441, 42379)]