21810140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99137}}^1$

素因数の和:99157

約数の個数: 24

約数和(自身を含む): 49965552

約数和(自身を除く): 28155412

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99137, 198274, 396548, 495685, 991370, 1090507, 1982740, 2181014, 4362028, 5452535, 10905070, 21810140]

約数ペア:

[(1, 21810140), (2, 10905070), (4, 5452535), (5, 4362028), (10, 2181014), (11, 1982740), (20, 1090507), (22, 991370), (44, 495685), (55, 396548), (110, 198274), (220, 99137)]