68977251

素因数分解:

$3^6\times 7^2\times {\mathrm{1931}}^1$

素因数の和:1963

約数の個数: 42

約数和(自身を含む): 120365532

約数和(自身を除く): 51388281

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 729, 1323, 1701, 1931, 3969, 5103, 5793, 11907, 13517, 17379, 35721, 40551, 52137, 94619, 121653, 156411, 283857, 364959, 469233, 851571, 1094877, 1407699, 2554713, 3284631, 7664139, 9853893, 22992417, 68977251]

約数ペア:

[(1, 68977251), (3, 22992417), (7, 9853893), (9, 7664139), (21, 3284631), (27, 2554713), (49, 1407699), (63, 1094877), (81, 851571), (147, 469233), (189, 364959), (243, 283857), (441, 156411), (567, 121653), (729, 94619), (1323, 52137), (1701, 40551), (1931, 35721), (3969, 17379), (5103, 13517), (5793, 11907)]