1020400

素因数分解:

$2^4\times 5^2\times {\mathrm{2551}}^1$

素因数の和:2569

約数の個数: 30

約数和(自身を含む): 2452472

約数和(自身を除く): 1432072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2551, 5102, 10204, 12755, 20408, 25510, 40816, 51020, 63775, 102040, 127550, 204080, 255100, 510200, 1020400]

約数ペア:

[(1, 1020400), (2, 510200), (4, 255100), (5, 204080), (8, 127550), (10, 102040), (16, 63775), (20, 51020), (25, 40816), (40, 25510), (50, 20408), (80, 12755), (100, 10204), (200, 5102), (400, 2551)]