20107521

素因数分解:

$3^5\times 7^1\times {\mathrm{11821}}^1$

素因数の和:11843

約数の個数: 24

約数和(自身を含む): 34425664

約数和(自身を除く): 14318143

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 11821, 35463, 82747, 106389, 248241, 319167, 744723, 957501, 2234169, 2872503, 6702507, 20107521]

約数ペア:

[(1, 20107521), (3, 6702507), (7, 2872503), (9, 2234169), (21, 957501), (27, 744723), (63, 319167), (81, 248241), (189, 106389), (243, 82747), (567, 35463), (1701, 11821)]