21793780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10789}}^1$

素因数の和:10899

約数の個数: 24

約数和(自身を含む): 46224360

約数和(自身を除く): 24430580

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10789, 21578, 43156, 53945, 107890, 215780, 1089689, 2179378, 4358756, 5448445, 10896890, 21793780]

約数ペア:

[(1, 21793780), (2, 10896890), (4, 5448445), (5, 4358756), (10, 2179378), (20, 1089689), (101, 215780), (202, 107890), (404, 53945), (505, 43156), (1010, 21578), (2020, 10789)]