16981385

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^2$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 22592520

約数和(自身を除く): 5611135

約数列:

[1, 5, 17, 29, 83, 85, 145, 415, 493, 1411, 2407, 2465, 6889, 7055, 12035, 34445, 40919, 117113, 199781, 204595, 585565, 998905, 3396277, 16981385]

約数ペア:

[(1, 16981385), (5, 3396277), (17, 998905), (29, 585565), (83, 204595), (85, 199781), (145, 117113), (415, 40919), (493, 34445), (1411, 12035), (2407, 7055), (2465, 6889)]