21929607

素因数分解:

$3^2\times 7^2\times {\mathrm{49727}}^1$

素因数の和:49747

約数の個数: 18

約数和(自身を含む): 36848448

約数和(自身を除く): 14918841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49727, 149181, 348089, 447543, 1044267, 2436623, 3132801, 7309869, 21929607]

約数ペア:

[(1, 21929607), (3, 7309869), (7, 3132801), (9, 2436623), (21, 1044267), (49, 447543), (63, 348089), (147, 149181), (441, 49727)]