20216680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4177}}^1$

素因数の和:4210

約数の個数: 48

約数和(自身を含む): 50010660

約数和(自身を除く): 29793980

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4177, 4840, 8354, 16708, 20885, 33416, 41770, 45947, 83540, 91894, 167080, 183788, 229735, 367576, 459470, 505417, 918940, 1010834, 1837880, 2021668, 2527085, 4043336, 5054170, 10108340, 20216680]

約数ペア:

[(1, 20216680), (2, 10108340), (4, 5054170), (5, 4043336), (8, 2527085), (10, 2021668), (11, 1837880), (20, 1010834), (22, 918940), (40, 505417), (44, 459470), (55, 367576), (88, 229735), (110, 183788), (121, 167080), (220, 91894), (242, 83540), (440, 45947), (484, 41770), (605, 33416), (968, 20885), (1210, 16708), (2420, 8354), (4177, 4840)]