9992000

素因数分解:

$2^6\times 5^3\times {\mathrm{1249}}^1$

素因数の和:1276

約数の個数: 56

約数和(自身を含む): 24765000

約数和(自身を除く): 14773000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1249, 1600, 2000, 2498, 4000, 4996, 6245, 8000, 9992, 12490, 19984, 24980, 31225, 39968, 49960, 62450, 79936, 99920, 124900, 156125, 199840, 249800, 312250, 399680, 499600, 624500, 999200, 1249000, 1998400, 2498000, 4996000, 9992000]

約数ペア:

[(1, 9992000), (2, 4996000), (4, 2498000), (5, 1998400), (8, 1249000), (10, 999200), (16, 624500), (20, 499600), (25, 399680), (32, 312250), (40, 249800), (50, 199840), (64, 156125), (80, 124900), (100, 99920), (125, 79936), (160, 62450), (200, 49960), (250, 39968), (320, 31225), (400, 24980), (500, 19984), (800, 12490), (1000, 9992), (1249, 8000), (1600, 6245), (2000, 4996), (2498, 4000)]