18213937

素因数分解:

$7^2\times {\mathrm{331}}^1\times {\mathrm{1123}}^1$

素因数の和:1468

約数の個数: 12

約数和(自身を含む): 21270576

約数和(自身を除く): 3056639

約数列:

[1, 7, 49, 331, 1123, 2317, 7861, 16219, 55027, 371713, 2601991, 18213937]

約数ペア:

[(1, 18213937), (7, 2601991), (49, 371713), (331, 55027), (1123, 16219), (2317, 7861)]