21650420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98411}}^1$

素因数の和:98431

約数の個数: 24

約数和(自身を含む): 49599648

約数和(自身を除く): 27949228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98411, 196822, 393644, 492055, 984110, 1082521, 1968220, 2165042, 4330084, 5412605, 10825210, 21650420]

約数ペア:

[(1, 21650420), (2, 10825210), (4, 5412605), (5, 4330084), (10, 2165042), (11, 1968220), (20, 1082521), (22, 984110), (44, 492055), (55, 393644), (110, 196822), (220, 98411)]