20794580

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1607}}^1$

素因数の和:2263

約数の個数: 24

約数和(自身を含む): 43763328

約数和(自身を除く): 22968748

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1607, 2588, 3214, 3235, 6428, 6470, 8035, 12940, 16070, 32140, 1039729, 2079458, 4158916, 5198645, 10397290, 20794580]

約数ペア:

[(1, 20794580), (2, 10397290), (4, 5198645), (5, 4158916), (10, 2079458), (20, 1039729), (647, 32140), (1294, 16070), (1607, 12940), (2588, 8035), (3214, 6470), (3235, 6428)]