393878303

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1451}}^1$

素因数の和:1647

約数の個数: 32

約数和(自身を含む): 513891840

約数和(自身を除く): 120013537

約数列:

[1, 7, 13, 19, 91, 133, 157, 247, 1099, 1451, 1729, 2041, 2983, 10157, 14287, 18863, 20881, 27569, 38779, 132041, 192983, 227807, 271453, 358397, 1594649, 2508779, 2961491, 4328333, 20730437, 30298331, 56268329, 393878303]

約数ペア:

[(1, 393878303), (7, 56268329), (13, 30298331), (19, 20730437), (91, 4328333), (133, 2961491), (157, 2508779), (247, 1594649), (1099, 358397), (1451, 271453), (1729, 227807), (2041, 192983), (2983, 132041), (10157, 38779), (14287, 27569), (18863, 20881)]