20217560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45949}}^1$

素因数の和:45971

約数の個数: 32

約数和(自身を含む): 49626000

約数和(自身を除く): 29408440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45949, 91898, 183796, 229745, 367592, 459490, 505439, 918980, 1010878, 1837960, 2021756, 2527195, 4043512, 5054390, 10108780, 20217560]

約数ペア:

[(1, 20217560), (2, 10108780), (4, 5054390), (5, 4043512), (8, 2527195), (10, 2021756), (11, 1837960), (20, 1010878), (22, 918980), (40, 505439), (44, 459490), (55, 367592), (88, 229745), (110, 183796), (220, 91898), (440, 45949)]