81195569

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{311}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 106229760

約数和(自身を除く): 25034191

約数列:

[1, 7, 13, 19, 91, 133, 151, 247, 311, 1057, 1729, 1963, 2177, 2869, 4043, 5909, 13741, 20083, 28301, 37297, 41363, 46961, 76817, 261079, 328727, 537719, 610493, 892259, 4273451, 6245813, 11599367, 81195569]

約数ペア:

[(1, 81195569), (7, 11599367), (13, 6245813), (19, 4273451), (91, 892259), (133, 610493), (151, 537719), (247, 328727), (311, 261079), (1057, 76817), (1729, 46961), (1963, 41363), (2177, 37297), (2869, 28301), (4043, 20083), (5909, 13741)]