25510000

素因数分解:

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

素因数の和:2579

約数の個数: 50

約数和(自身を含む): 61786472

約数和(自身を除く): 36276472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2551, 5000, 5102, 10000, 10204, 12755, 20408, 25510, 40816, 51020, 63775, 102040, 127550, 204080, 255100, 318875, 510200, 637750, 1020400, 1275500, 1594375, 2551000, 3188750, 5102000, 6377500, 12755000, 25510000]

約数ペア:

[(1, 25510000), (2, 12755000), (4, 6377500), (5, 5102000), (8, 3188750), (10, 2551000), (16, 1594375), (20, 1275500), (25, 1020400), (40, 637750), (50, 510200), (80, 318875), (100, 255100), (125, 204080), (200, 127550), (250, 102040), (400, 63775), (500, 51020), (625, 40816), (1000, 25510), (1250, 20408), (2000, 12755), (2500, 10204), (2551, 10000), (5000, 5102)]