68905809

素因数分解:

$3^7\times 7^2\times {\mathrm{643}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 120402240

約数和(自身を除く): 51496431

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 643, 729, 1323, 1701, 1929, 2187, 3969, 4501, 5103, 5787, 11907, 13503, 15309, 17361, 31507, 35721, 40509, 52083, 94521, 107163, 121527, 156249, 283563, 364581, 468747, 850689, 1093743, 1406241, 2552067, 3281229, 7656201, 9843687, 22968603, 68905809]

約数ペア:

[(1, 68905809), (3, 22968603), (7, 9843687), (9, 7656201), (21, 3281229), (27, 2552067), (49, 1406241), (63, 1093743), (81, 850689), (147, 468747), (189, 364581), (243, 283563), (441, 156249), (567, 121527), (643, 107163), (729, 94521), (1323, 52083), (1701, 40509), (1929, 35721), (2187, 31507), (3969, 17361), (4501, 15309), (5103, 13503), (5787, 11907)]