21772880

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2143}}^1$

素因数の和:2283

約数の個数: 40

約数和(自身を含む): 51044352

約数和(自身を除く): 29271472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2143, 2540, 4286, 5080, 8572, 10160, 10715, 17144, 21430, 34288, 42860, 85720, 171440, 272161, 544322, 1088644, 1360805, 2177288, 2721610, 4354576, 5443220, 10886440, 21772880]

約数ペア:

[(1, 21772880), (2, 10886440), (4, 5443220), (5, 4354576), (8, 2721610), (10, 2177288), (16, 1360805), (20, 1088644), (40, 544322), (80, 272161), (127, 171440), (254, 85720), (508, 42860), (635, 34288), (1016, 21430), (1270, 17144), (2032, 10715), (2143, 10160), (2540, 8572), (4286, 5080)]