2498000

素因数分解:

$2^4\times 5^3\times {\mathrm{1249}}^1$

素因数の和:1272

約数の個数: 40

約数和(自身を含む): 6045000

約数和(自身を除く): 3547000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 1249, 2000, 2498, 4996, 6245, 9992, 12490, 19984, 24980, 31225, 49960, 62450, 99920, 124900, 156125, 249800, 312250, 499600, 624500, 1249000, 2498000]

約数ペア:

[(1, 2498000), (2, 1249000), (4, 624500), (5, 499600), (8, 312250), (10, 249800), (16, 156125), (20, 124900), (25, 99920), (40, 62450), (50, 49960), (80, 31225), (100, 24980), (125, 19984), (200, 12490), (250, 9992), (400, 6245), (500, 4996), (1000, 2498), (1249, 2000)]