20964820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22303}}^1$

素因数の和:22359

約数の個数: 24

約数和(自身を含む): 44964864

約数和(自身を除く): 24000044

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22303, 44606, 89212, 111515, 223030, 446060, 1048241, 2096482, 4192964, 5241205, 10482410, 20964820]

約数ペア:

[(1, 20964820), (2, 10482410), (4, 5241205), (5, 4192964), (10, 2096482), (20, 1048241), (47, 446060), (94, 223030), (188, 111515), (235, 89212), (470, 44606), (940, 22303)]