20809450

素因数分解:

$2^1\times 5^2\times {\mathrm{191}}^1\times {\mathrm{2179}}^1$

素因数の和:2382

約数の個数: 24

約数和(自身を含む): 38926080

約数和(自身を除く): 18116630

約数列:

[1, 2, 5, 10, 25, 50, 191, 382, 955, 1910, 2179, 4358, 4775, 9550, 10895, 21790, 54475, 108950, 416189, 832378, 2080945, 4161890, 10404725, 20809450]

約数ペア:

[(1, 20809450), (2, 10404725), (5, 4161890), (10, 2080945), (25, 832378), (50, 416189), (191, 108950), (382, 54475), (955, 21790), (1910, 10895), (2179, 9550), (4358, 4775)]