18721854

素因数分解:

$2^1\times 3^4\times {\mathrm{163}}^1\times {\mathrm{709}}^1$

素因数の和:886

約数の個数: 40

約数和(自身を含む): 42267720

約数和(自身を除く): 23545866

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 163, 326, 489, 709, 978, 1418, 1467, 2127, 2934, 4254, 4401, 6381, 8802, 12762, 13203, 19143, 26406, 38286, 57429, 114858, 115567, 231134, 346701, 693402, 1040103, 2080206, 3120309, 6240618, 9360927, 18721854]

約数ペア:

[(1, 18721854), (2, 9360927), (3, 6240618), (6, 3120309), (9, 2080206), (18, 1040103), (27, 693402), (54, 346701), (81, 231134), (162, 115567), (163, 114858), (326, 57429), (489, 38286), (709, 26406), (978, 19143), (1418, 13203), (1467, 12762), (2127, 8802), (2934, 6381), (4254, 4401)]