21810580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99139}}^1$

素因数の和:99159

約数の個数: 24

約数和(自身を含む): 49966560

約数和(自身を除く): 28155980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99139, 198278, 396556, 495695, 991390, 1090529, 1982780, 2181058, 4362116, 5452645, 10905290, 21810580]

約数ペア:

[(1, 21810580), (2, 10905290), (4, 5452645), (5, 4362116), (10, 2181058), (11, 1982780), (20, 1090529), (22, 991390), (44, 495695), (55, 396556), (110, 198278), (220, 99139)]