81226691

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 106444800

約数和(自身を除く): 25218109

約数列:

[1, 7, 13, 19, 91, 109, 133, 247, 431, 763, 1417, 1729, 2071, 3017, 5603, 8189, 9919, 14497, 26923, 39221, 46979, 57323, 106457, 188461, 328853, 610727, 745199, 892601, 4275089, 6248207, 11603813, 81226691]

約数ペア:

[(1, 81226691), (7, 11603813), (13, 6248207), (19, 4275089), (91, 892601), (109, 745199), (133, 610727), (247, 328853), (431, 188461), (763, 106457), (1417, 57323), (1729, 46979), (2071, 39221), (3017, 26923), (5603, 14497), (8189, 9919)]