21959418

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{281531}}^1$

素因数の和:281549

約数の個数: 16

約数和(自身を含む): 47297376

約数和(自身を除く): 25337958

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 281531, 563062, 844593, 1689186, 3659903, 7319806, 10979709, 21959418]

約数ペア:

[(1, 21959418), (2, 10979709), (3, 7319806), (6, 3659903), (13, 1689186), (26, 844593), (39, 563062), (78, 281531)]