27142857

素因数分解:

$3^9\times 7^1\times {\mathrm{197}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 46766016

約数和(自身を除く): 19623159

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 197, 243, 567, 591, 729, 1379, 1701, 1773, 2187, 4137, 5103, 5319, 6561, 12411, 15309, 15957, 19683, 37233, 45927, 47871, 111699, 137781, 143613, 335097, 430839, 1005291, 1292517, 3015873, 3877551, 9047619, 27142857]

約数ペア:

[(1, 27142857), (3, 9047619), (7, 3877551), (9, 3015873), (21, 1292517), (27, 1005291), (63, 430839), (81, 335097), (189, 143613), (197, 137781), (243, 111699), (567, 47871), (591, 45927), (729, 37233), (1379, 19683), (1701, 15957), (1773, 15309), (2187, 12411), (4137, 6561), (5103, 5319)]