20675650

素因数分解:

$2^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{1609}}^1$

素因数の和:1878

約数の個数: 24

約数和(自身を含む): 38630340

約数和(自身を除く): 17954690

約数列:

[1, 2, 5, 10, 25, 50, 257, 514, 1285, 1609, 2570, 3218, 6425, 8045, 12850, 16090, 40225, 80450, 413513, 827026, 2067565, 4135130, 10337825, 20675650]

約数ペア:

[(1, 20675650), (2, 10337825), (5, 4135130), (10, 2067565), (25, 827026), (50, 413513), (257, 80450), (514, 40225), (1285, 16090), (1609, 12850), (2570, 8045), (3218, 6425)]