4490000

素因数分解:

$2^4\times 5^4\times {\mathrm{449}}^1$

素因数の和:477

約数の個数: 50

約数和(自身を含む): 10894950

約数和(自身を除く): 6404950

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 449, 500, 625, 898, 1000, 1250, 1796, 2000, 2245, 2500, 3592, 4490, 5000, 7184, 8980, 10000, 11225, 17960, 22450, 35920, 44900, 56125, 89800, 112250, 179600, 224500, 280625, 449000, 561250, 898000, 1122500, 2245000, 4490000]

約数ペア:

[(1, 4490000), (2, 2245000), (4, 1122500), (5, 898000), (8, 561250), (10, 449000), (16, 280625), (20, 224500), (25, 179600), (40, 112250), (50, 89800), (80, 56125), (100, 44900), (125, 35920), (200, 22450), (250, 17960), (400, 11225), (449, 10000), (500, 8980), (625, 7184), (898, 5000), (1000, 4490), (1250, 3592), (1796, 2500), (2000, 2245)]