20989400

素因数分解:

$2^3\times 5^2\times {\mathrm{104947}}^1$

素因数の和:104963

約数の個数: 24

約数和(自身を含む): 48800820

約数和(自身を除く): 27811420

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 104947, 209894, 419788, 524735, 839576, 1049470, 2098940, 2623675, 4197880, 5247350, 10494700, 20989400]

約数ペア:

[(1, 20989400), (2, 10494700), (4, 5247350), (5, 4197880), (8, 2623675), (10, 2098940), (20, 1049470), (25, 839576), (40, 524735), (50, 419788), (100, 209894), (200, 104947)]