20430400

素因数分解:

$2^6\times 5^2\times {\mathrm{113}}^2$

素因数の和:248

約数の個数: 63

約数和(自身を含む): 50720371

約数和(自身を除く): 30289971

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 113, 160, 200, 226, 320, 400, 452, 565, 800, 904, 1130, 1600, 1808, 2260, 2825, 3616, 4520, 5650, 7232, 9040, 11300, 12769, 18080, 22600, 25538, 36160, 45200, 51076, 63845, 90400, 102152, 127690, 180800, 204304, 255380, 319225, 408608, 510760, 638450, 817216, 1021520, 1276900, 2043040, 2553800, 4086080, 5107600, 10215200, 20430400]

約数ペア:

[(1, 20430400), (2, 10215200), (4, 5107600), (5, 4086080), (8, 2553800), (10, 2043040), (16, 1276900), (20, 1021520), (25, 817216), (32, 638450), (40, 510760), (50, 408608), (64, 319225), (80, 255380), (100, 204304), (113, 180800), (160, 127690), (200, 102152), (226, 90400), (320, 63845), (400, 51076), (452, 45200), (565, 36160), (800, 25538), (904, 22600), (1130, 18080), (1600, 12769), (1808, 11300), (2260, 9040), (2825, 7232), (3616, 5650)]