21755545

素因数分解:

$5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{7489}}^1$

素因数の和:7584

約数の個数: 16

約数和(自身を含む): 30199680

約数和(自身を除く): 8444135

約数列:

[1, 5, 7, 35, 83, 415, 581, 2905, 7489, 37445, 52423, 262115, 621587, 3107935, 4351109, 21755545]

約数ペア:

[(1, 21755545), (5, 4351109), (7, 3107935), (35, 621587), (83, 262115), (415, 52423), (581, 37445), (2905, 7489)]