247978367

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2927}}^1$

素因数の和:2980

約数の個数: 32

約数和(自身を含む): 327936000

約数和(自身を除く): 79957633

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 343, 637, 931, 1729, 2927, 4459, 6517, 12103, 20489, 38051, 55613, 84721, 143423, 266357, 389291, 722969, 1003961, 1864499, 2725037, 5060783, 13051493, 19075259, 35425481, 247978367]

約数ペア:

[(1, 247978367), (7, 35425481), (13, 19075259), (19, 13051493), (49, 5060783), (91, 2725037), (133, 1864499), (247, 1003961), (343, 722969), (637, 389291), (931, 266357), (1729, 143423), (2927, 84721), (4459, 55613), (6517, 38051), (12103, 20489)]