28778800

素因数分解:

$2^4\times 5^2\times {\mathrm{71947}}^1$

素因数の和:71965

約数の個数: 30

約数和(自身を含む): 69142028

約数和(自身を除く): 40363228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 71947, 143894, 287788, 359735, 575576, 719470, 1151152, 1438940, 1798675, 2877880, 3597350, 5755760, 7194700, 14389400, 28778800]

約数ペア:

[(1, 28778800), (2, 14389400), (4, 7194700), (5, 5755760), (8, 3597350), (10, 2877880), (16, 1798675), (20, 1438940), (25, 1151152), (40, 719470), (50, 575576), (80, 359735), (100, 287788), (200, 143894), (400, 71947)]