8120500

素因数分解:

$2^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 18018000

約数和(自身を除く): 9897500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 125, 149, 218, 250, 298, 436, 500, 545, 596, 745, 1090, 1490, 2180, 2725, 2980, 3725, 5450, 7450, 10900, 13625, 14900, 16241, 18625, 27250, 32482, 37250, 54500, 64964, 74500, 81205, 162410, 324820, 406025, 812050, 1624100, 2030125, 4060250, 8120500]

約数ペア:

[(1, 8120500), (2, 4060250), (4, 2030125), (5, 1624100), (10, 812050), (20, 406025), (25, 324820), (50, 162410), (100, 81205), (109, 74500), (125, 64964), (149, 54500), (218, 37250), (250, 32482), (298, 27250), (436, 18625), (500, 16241), (545, 14900), (596, 13625), (745, 10900), (1090, 7450), (1490, 5450), (2180, 3725), (2725, 2980)]