205122220191

素因数分解:

$3^2\times 7^2\times {\mathrm{465129751}}^1$

素因数の和:465129771

約数の個数: 18

約数和(自身を含む): 344661146232

約数和(自身を除く): 139538926041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 465129751, 1395389253, 3255908257, 4186167759, 9767724771, 22791357799, 29303174313, 68374073397, 205122220191]

約数ペア:

[(1, 205122220191), (3, 68374073397), (7, 29303174313), (9, 22791357799), (21, 9767724771), (49, 4186167759), (63, 3255908257), (147, 1395389253), (441, 465129751)]