20784280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47237}}^1$

素因数の和:47259

約数の個数: 32

約数和(自身を含む): 51017040

約数和(自身を除く): 30232760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47237, 94474, 188948, 236185, 377896, 472370, 519607, 944740, 1039214, 1889480, 2078428, 2598035, 4156856, 5196070, 10392140, 20784280]

約数ペア:

[(1, 20784280), (2, 10392140), (4, 5196070), (5, 4156856), (8, 2598035), (10, 2078428), (11, 1889480), (20, 1039214), (22, 944740), (40, 519607), (44, 472370), (55, 377896), (88, 236185), (110, 188948), (220, 94474), (440, 47237)]