19818220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9811}}^1$

素因数の和:9921

約数の個数: 24

約数和(自身を含む): 42034608

約数和(自身を除く): 22216388

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9811, 19622, 39244, 49055, 98110, 196220, 990911, 1981822, 3963644, 4954555, 9909110, 19818220]

約数ペア:

[(1, 19818220), (2, 9909110), (4, 4954555), (5, 3963644), (10, 1981822), (20, 990911), (101, 196220), (202, 98110), (404, 49055), (505, 39244), (1010, 19622), (2020, 9811)]