20883880

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4111}}^1$

素因数の和:4249

約数の個数: 32

約数和(自身を含む): 47370240

約数和(自身を除く): 26486360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4111, 5080, 8222, 16444, 20555, 32888, 41110, 82220, 164440, 522097, 1044194, 2088388, 2610485, 4176776, 5220970, 10441940, 20883880]

約数ペア:

[(1, 20883880), (2, 10441940), (4, 5220970), (5, 4176776), (8, 2610485), (10, 2088388), (20, 1044194), (40, 522097), (127, 164440), (254, 82220), (508, 41110), (635, 32888), (1016, 20555), (1270, 16444), (2540, 8222), (4111, 5080)]