20011815

素因数分解:

$3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1013}}^1$

素因数の和:1463

約数の個数: 24

約数和(自身を含む): 34800480

約数和(自身を除く): 14788665

約数列:

[1, 3, 5, 9, 15, 45, 439, 1013, 1317, 2195, 3039, 3951, 5065, 6585, 9117, 15195, 19755, 45585, 444707, 1334121, 2223535, 4002363, 6670605, 20011815]

約数ペア:

[(1, 20011815), (3, 6670605), (5, 4002363), (9, 2223535), (15, 1334121), (45, 444707), (439, 45585), (1013, 19755), (1317, 15195), (2195, 9117), (3039, 6585), (3951, 5065)]