18685521

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{911}}^1$

素因数の和:1013

約数の個数: 24

約数和(自身を含む): 28169856

約数和(自身を除く): 9484335

約数列:

[1, 3, 9, 43, 53, 129, 159, 387, 477, 911, 2279, 2733, 6837, 8199, 20511, 39173, 48283, 117519, 144849, 352557, 434547, 2076169, 6228507, 18685521]

約数ペア:

[(1, 18685521), (3, 6228507), (9, 2076169), (43, 434547), (53, 352557), (129, 144849), (159, 117519), (387, 48283), (477, 39173), (911, 20511), (2279, 8199), (2733, 6837)]