9870040

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{557}}^1$

素因数の和:1011

約数の個数: 32

約数和(自身を含む): 22297680

約数和(自身を除く): 12427640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 557, 886, 1114, 1772, 2215, 2228, 2785, 3544, 4430, 4456, 5570, 8860, 11140, 17720, 22280, 246751, 493502, 987004, 1233755, 1974008, 2467510, 4935020, 9870040]

約数ペア:

[(1, 9870040), (2, 4935020), (4, 2467510), (5, 1974008), (8, 1233755), (10, 987004), (20, 493502), (40, 246751), (443, 22280), (557, 17720), (886, 11140), (1114, 8860), (1772, 5570), (2215, 4456), (2228, 4430), (2785, 3544)]