18202220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9011}}^1$

素因数の和:9121

約数の個数: 24

約数和(自身を含む): 38607408

約数和(自身を除く): 20405188

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9011, 18022, 36044, 45055, 90110, 180220, 910111, 1820222, 3640444, 4550555, 9101110, 18202220]

約数ペア:

[(1, 18202220), (2, 9101110), (4, 4550555), (5, 3640444), (10, 1820222), (20, 910111), (101, 180220), (202, 90110), (404, 45055), (505, 36044), (1010, 18022), (2020, 9011)]