21256220

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22613}}^1$

素因数の和:22669

約数の個数: 24

約数和(自身を含む): 45589824

約数和(自身を除く): 24333604

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22613, 45226, 90452, 113065, 226130, 452260, 1062811, 2125622, 4251244, 5314055, 10628110, 21256220]

約数ペア:

[(1, 21256220), (2, 10628110), (4, 5314055), (5, 4251244), (10, 2125622), (20, 1062811), (47, 452260), (94, 226130), (188, 113065), (235, 90452), (470, 45226), (940, 22613)]