31276287

素因数分解:

$3^9\times 7^1\times {\mathrm{227}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 53851776

約数和(自身を除く): 22575489

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 227, 243, 567, 681, 729, 1589, 1701, 2043, 2187, 4767, 5103, 6129, 6561, 14301, 15309, 18387, 19683, 42903, 45927, 55161, 128709, 137781, 165483, 386127, 496449, 1158381, 1489347, 3475143, 4468041, 10425429, 31276287]

約数ペア:

[(1, 31276287), (3, 10425429), (7, 4468041), (9, 3475143), (21, 1489347), (27, 1158381), (63, 496449), (81, 386127), (189, 165483), (227, 137781), (243, 128709), (567, 55161), (681, 45927), (729, 42903), (1589, 19683), (1701, 18387), (2043, 15309), (2187, 14301), (4767, 6561), (5103, 6129)]