22220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 51408

約数和(自身を除く): 29188

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 2020, 2222, 4444, 5555, 11110, 22220]

約数ペア:

[(1, 22220), (2, 11110), (4, 5555), (5, 4444), (10, 2222), (11, 2020), (20, 1111), (22, 1010), (44, 505), (55, 404), (101, 220), (110, 202)]