9900920

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1949}}^1$

素因数の和:2087

約数の個数: 32

約数和(自身を含む): 22464000

約数和(自身を除く): 12563080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 1949, 2540, 3898, 5080, 7796, 9745, 15592, 19490, 38980, 77960, 247523, 495046, 990092, 1237615, 1980184, 2475230, 4950460, 9900920]

約数ペア:

[(1, 9900920), (2, 4950460), (4, 2475230), (5, 1980184), (8, 1237615), (10, 990092), (20, 495046), (40, 247523), (127, 77960), (254, 38980), (508, 19490), (635, 15592), (1016, 9745), (1270, 7796), (1949, 5080), (2540, 3898)]