12345800

素因数分解:

$2^3\times 5^2\times {\mathrm{61729}}^1$

素因数の和:61745

約数の個数: 24

約数和(自身を含む): 28704450

約数和(自身を除く): 16358650

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 61729, 123458, 246916, 308645, 493832, 617290, 1234580, 1543225, 2469160, 3086450, 6172900, 12345800]

約数ペア:

[(1, 12345800), (2, 6172900), (4, 3086450), (5, 2469160), (8, 1543225), (10, 1234580), (20, 617290), (25, 493832), (40, 308645), (50, 246916), (100, 123458), (200, 61729)]