21938427

素因数分解:

$3^2\times 7^2\times {\mathrm{49747}}^1$

素因数の和:49767

約数の個数: 18

約数和(自身を含む): 36863268

約数和(自身を除く): 14924841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49747, 149241, 348229, 447723, 1044687, 2437603, 3134061, 7312809, 21938427]

約数ペア:

[(1, 21938427), (3, 7312809), (7, 3134061), (9, 2437603), (21, 1044687), (49, 447723), (63, 348229), (147, 149241), (441, 49747)]