128347978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{647}}^1$

素因数の和:858

約数の個数: 32

約数和(自身を含む): 214990848

約数和(自身を除く): 86642870

約数列:

[1, 2, 11, 22, 71, 127, 142, 254, 647, 781, 1294, 1397, 1562, 2794, 7117, 9017, 14234, 18034, 45937, 82169, 91874, 99187, 164338, 198374, 505307, 903859, 1010614, 1807718, 5833999, 11667998, 64173989, 128347978]

約数ペア:

[(1, 128347978), (2, 64173989), (11, 11667998), (22, 5833999), (71, 1807718), (127, 1010614), (142, 903859), (254, 505307), (647, 198374), (781, 164338), (1294, 99187), (1397, 91874), (1562, 82169), (2794, 45937), (7117, 18034), (9017, 14234)]