18722015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{16943}}^1$

素因数の和:16978

約数の個数: 16

約数和(自身を含む): 25619328

約数和(自身を除く): 6897313

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 16943, 84715, 220259, 288031, 1101295, 1440155, 3744403, 18722015]

約数ペア:

[(1, 18722015), (5, 3744403), (13, 1440155), (17, 1101295), (65, 288031), (85, 220259), (221, 84715), (1105, 16943)]