20424220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10111}}^1$

素因数の和:10221

約数の個数: 24

約数和(自身を含む): 43319808

約数和(自身を除く): 22895588

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10111, 20222, 40444, 50555, 101110, 202220, 1021211, 2042422, 4084844, 5106055, 10212110, 20424220]

約数ペア:

[(1, 20424220), (2, 10212110), (4, 5106055), (5, 4084844), (10, 2042422), (20, 1021211), (101, 202220), (202, 101110), (404, 50555), (505, 40444), (1010, 20222), (2020, 10111)]