21446945

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1493}}^1$

素因数の和:1541

約数の個数: 24

約数和(自身を含む): 29527416

約数和(自身を除く): 8080471

約数列:

[1, 5, 13, 17, 65, 85, 169, 221, 845, 1105, 1493, 2873, 7465, 14365, 19409, 25381, 97045, 126905, 252317, 329953, 1261585, 1649765, 4289389, 21446945]

約数ペア:

[(1, 21446945), (5, 4289389), (13, 1649765), (17, 1261585), (65, 329953), (85, 252317), (169, 126905), (221, 97045), (845, 25381), (1105, 19409), (1493, 14365), (2873, 7465)]