12921800

素因数分解:

$2^3\times 5^2\times {\mathrm{64609}}^1$

素因数の和:64625

約数の個数: 24

約数和(自身を含む): 30043650

約数和(自身を除く): 17121850

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 64609, 129218, 258436, 323045, 516872, 646090, 1292180, 1615225, 2584360, 3230450, 6460900, 12921800]

約数ペア:

[(1, 12921800), (2, 6460900), (4, 3230450), (5, 2584360), (8, 1615225), (10, 1292180), (20, 646090), (25, 516872), (40, 323045), (50, 258436), (100, 129218), (200, 64609)]