10780400

素因数分解:

$2^4\times 5^2\times {\mathrm{26951}}^1$

素因数の和:26969

約数の個数: 30

約数和(自身を含む): 25900872

約数和(自身を除く): 15120472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 26951, 53902, 107804, 134755, 215608, 269510, 431216, 539020, 673775, 1078040, 1347550, 2156080, 2695100, 5390200, 10780400]

約数ペア:

[(1, 10780400), (2, 5390200), (4, 2695100), (5, 2156080), (8, 1347550), (10, 1078040), (16, 673775), (20, 539020), (25, 431216), (40, 269510), (50, 215608), (80, 134755), (100, 107804), (200, 53902), (400, 26951)]