21795895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2851}}^1$

素因数の和:3006

約数の個数: 16

約数和(自身を含む): 28748160

約数和(自身を除く): 6952265

約数列:

[1, 5, 11, 55, 139, 695, 1529, 2851, 7645, 14255, 31361, 156805, 396289, 1981445, 4359179, 21795895]

約数ペア:

[(1, 21795895), (5, 4359179), (11, 1981445), (55, 396289), (139, 156805), (695, 31361), (1529, 14255), (2851, 7645)]