81857979

素因数分解:

$3^3\times 7^3\times {\mathrm{8839}}^1$

素因数の和:8869

約数の個数: 32

約数和(自身を含む): 141440000

約数和(自身を除く): 59582021

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 3087, 8839, 9261, 26517, 61873, 79551, 185619, 238653, 433111, 556857, 1299333, 1670571, 3031777, 3897999, 9095331, 11693997, 27285993, 81857979]

約数ペア:

[(1, 81857979), (3, 27285993), (7, 11693997), (9, 9095331), (21, 3897999), (27, 3031777), (49, 1670571), (63, 1299333), (147, 556857), (189, 433111), (343, 238653), (441, 185619), (1029, 79551), (1323, 61873), (3087, 26517), (8839, 9261)]