20418993

素因数分解:

$3^3\times 7^1\times {\mathrm{108037}}^1$

素因数の和:108053

約数の個数: 16

約数和(自身を含む): 34572160

約数和(自身を除く): 14153167

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 108037, 324111, 756259, 972333, 2268777, 2916999, 6806331, 20418993]

約数ペア:

[(1, 20418993), (3, 6806331), (7, 2916999), (9, 2268777), (21, 972333), (27, 756259), (63, 324111), (189, 108037)]