19947627

素因数分解:

$3^7\times 7^1\times {\mathrm{1303}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 34216960

約数和(自身を除く): 14269333

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1303, 1701, 2187, 3909, 5103, 9121, 11727, 15309, 27363, 35181, 82089, 105543, 246267, 316629, 738801, 949887, 2216403, 2849661, 6649209, 19947627]

約数ペア:

[(1, 19947627), (3, 6649209), (7, 2849661), (9, 2216403), (21, 949887), (27, 738801), (63, 316629), (81, 246267), (189, 105543), (243, 82089), (567, 35181), (729, 27363), (1303, 15309), (1701, 11727), (2187, 9121), (3909, 5103)]