21800284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{495461}}^1$

素因数の和:495476

約数の個数: 12

約数和(自身を含む): 41618808

約数和(自身を除く): 19818524

約数列:

[1, 2, 4, 11, 22, 44, 495461, 990922, 1981844, 5450071, 10900142, 21800284]

約数ペア:

[(1, 21800284), (2, 10900142), (4, 5450071), (11, 1981844), (22, 990922), (44, 495461)]