21182800

素因数分解:

$2^4\times 5^2\times {\mathrm{52957}}^1$

素因数の和:52975

約数の個数: 30

約数和(自身を含む): 50892638

約数和(自身を除く): 29709838

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52957, 105914, 211828, 264785, 423656, 529570, 847312, 1059140, 1323925, 2118280, 2647850, 4236560, 5295700, 10591400, 21182800]

約数ペア:

[(1, 21182800), (2, 10591400), (4, 5295700), (5, 4236560), (8, 2647850), (10, 2118280), (16, 1323925), (20, 1059140), (25, 847312), (40, 529570), (50, 423656), (80, 264785), (100, 211828), (200, 105914), (400, 52957)]