81389714

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2213}}^1$

素因数の和:2330

約数の個数: 32

約数和(自身を含む): 145380096

約数和(自身を除く): 63990382

約数列:

[1, 2, 7, 14, 37, 71, 74, 142, 259, 497, 518, 994, 2213, 2627, 4426, 5254, 15491, 18389, 30982, 36778, 81881, 157123, 163762, 314246, 573167, 1099861, 1146334, 2199722, 5813551, 11627102, 40694857, 81389714]

約数ペア:

[(1, 81389714), (2, 40694857), (7, 11627102), (14, 5813551), (37, 2199722), (71, 1146334), (74, 1099861), (142, 573167), (259, 314246), (497, 163762), (518, 157123), (994, 81881), (2213, 36778), (2627, 30982), (4426, 18389), (5254, 15491)]