42664420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21121}}^1$

素因数の和:21231

約数の個数: 24

約数和(自身を含む): 90486648

約数和(自身を除く): 47822228

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 21121, 42242, 84484, 105605, 211210, 422420, 2133221, 4266442, 8532884, 10666105, 21332210, 42664420]

約数ペア:

[(1, 42664420), (2, 21332210), (4, 10666105), (5, 8532884), (10, 4266442), (20, 2133221), (101, 422420), (202, 211210), (404, 105605), (505, 84484), (1010, 42242), (2020, 21121)]