12490000

素因数分解:

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

素因数の和:1277

約数の個数: 50

約数和(自身を含む): 30263750

約数和(自身を除く): 17773750

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1249, 1250, 2000, 2498, 2500, 4996, 5000, 6245, 9992, 10000, 12490, 19984, 24980, 31225, 49960, 62450, 99920, 124900, 156125, 249800, 312250, 499600, 624500, 780625, 1249000, 1561250, 2498000, 3122500, 6245000, 12490000]

約数ペア:

[(1, 12490000), (2, 6245000), (4, 3122500), (5, 2498000), (8, 1561250), (10, 1249000), (16, 780625), (20, 624500), (25, 499600), (40, 312250), (50, 249800), (80, 156125), (100, 124900), (125, 99920), (200, 62450), (250, 49960), (400, 31225), (500, 24980), (625, 19984), (1000, 12490), (1249, 10000), (1250, 9992), (2000, 6245), (2498, 5000), (2500, 4996)]