21271558

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{433}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 20288282

約数列:

[1, 2, 7, 11, 14, 22, 29, 58, 77, 121, 154, 203, 242, 319, 406, 433, 638, 847, 866, 1694, 2233, 3031, 3509, 4466, 4763, 6062, 7018, 9526, 12557, 24563, 25114, 33341, 49126, 52393, 66682, 87899, 104786, 138127, 175798, 276254, 366751, 733502, 966889, 1519397, 1933778, 3038794, 10635779, 21271558]

約数ペア:

[(1, 21271558), (2, 10635779), (7, 3038794), (11, 1933778), (14, 1519397), (22, 966889), (29, 733502), (58, 366751), (77, 276254), (121, 175798), (154, 138127), (203, 104786), (242, 87899), (319, 66682), (406, 52393), (433, 49126), (638, 33341), (847, 25114), (866, 24563), (1694, 12557), (2233, 9526), (3031, 7018), (3509, 6062), (4466, 4763)]