68778800

素因数分解:

$2^4\times 5^2\times {\mathrm{171947}}^1$

素因数の和:171965

約数の個数: 30

約数和(自身を含む): 165242028

約数和(自身を除く): 96463228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 171947, 343894, 687788, 859735, 1375576, 1719470, 2751152, 3438940, 4298675, 6877880, 8597350, 13755760, 17194700, 34389400, 68778800]

約数ペア:

[(1, 68778800), (2, 34389400), (4, 17194700), (5, 13755760), (8, 8597350), (10, 6877880), (16, 4298675), (20, 3438940), (25, 2751152), (40, 1719470), (50, 1375576), (80, 859735), (100, 687788), (200, 343894), (400, 171947)]