81278995

素因数分解:

$5^1\times 7^3\times {\mathrm{83}}^1\times {\mathrm{571}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 115315200

約数和(自身を除く): 34036205

約数列:

[1, 5, 7, 35, 49, 83, 245, 343, 415, 571, 581, 1715, 2855, 2905, 3997, 4067, 19985, 20335, 27979, 28469, 47393, 139895, 142345, 195853, 236965, 331751, 979265, 1658755, 2322257, 11611285, 16255799, 81278995]

約数ペア:

[(1, 81278995), (5, 16255799), (7, 11611285), (35, 2322257), (49, 1658755), (83, 979265), (245, 331751), (343, 236965), (415, 195853), (571, 142345), (581, 139895), (1715, 47393), (2855, 28469), (2905, 27979), (3997, 20335), (4067, 19985)]