18740043

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2729}}^1$

素因数の和:2851

約数の個数: 24

約数和(自身を含む): 31231200

約数和(自身を除く): 12491157

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 2729, 6867, 8187, 19103, 24561, 57309, 171927, 297461, 892383, 2082227, 2677149, 6246681, 18740043]

約数ペア:

[(1, 18740043), (3, 6246681), (7, 2677149), (9, 2082227), (21, 892383), (63, 297461), (109, 171927), (327, 57309), (763, 24561), (981, 19103), (2289, 8187), (2729, 6867)]