20205009

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{499}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 31980000

約数和(自身を除く): 11774991

約数列:

[1, 3, 9, 11, 33, 99, 409, 499, 1227, 1497, 3681, 4491, 4499, 5489, 13497, 16467, 40491, 49401, 204091, 612273, 1836819, 2245001, 6735003, 20205009]

約数ペア:

[(1, 20205009), (3, 6735003), (9, 2245001), (11, 1836819), (33, 612273), (99, 204091), (409, 49401), (499, 40491), (1227, 16467), (1497, 13497), (3681, 5489), (4491, 4499)]