28189809

素因数分解:

$3^3\times {\mathrm{127}}^1\times {\mathrm{8221}}^1$

素因数の和:8357

約数の個数: 16

約数和(自身を含む): 42096640

約数和(自身を除く): 13906831

約数列:

[1, 3, 9, 27, 127, 381, 1143, 3429, 8221, 24663, 73989, 221967, 1044067, 3132201, 9396603, 28189809]

約数ペア:

[(1, 28189809), (3, 9396603), (9, 3132201), (27, 1044067), (127, 221967), (381, 73989), (1143, 24663), (3429, 8221)]