21769495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{997}}^1$

素因数の和:1410

約数の個数: 16

約数和(自身を含む): 28598688

約数和(自身を除く): 6829193

約数列:

[1, 5, 11, 55, 397, 997, 1985, 4367, 4985, 10967, 21835, 54835, 395809, 1979045, 4353899, 21769495]

約数ペア:

[(1, 21769495), (5, 4353899), (11, 1979045), (55, 395809), (397, 54835), (997, 21835), (1985, 10967), (4367, 4985)]