21999005

素因数分解:

$5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{2221}}^1$

素因数の和:2516

約数の個数: 16

約数和(自身を含む): 30290304

約数和(自身を除く): 8291299

約数列:

[1, 5, 7, 35, 283, 1415, 1981, 2221, 9905, 11105, 15547, 77735, 628543, 3142715, 4399801, 21999005]

約数ペア:

[(1, 21999005), (5, 4399801), (7, 3142715), (35, 628543), (283, 77735), (1415, 15547), (1981, 11105), (2221, 9905)]