18279009

素因数分解:

$3^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:430

約数の個数: 36

約数和(自身を含む): 31018260

約数和(自身を除く): 12739251

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 181, 229, 441, 543, 687, 1267, 1603, 1629, 2061, 3801, 4809, 8869, 11221, 11403, 14427, 26607, 33663, 41449, 79821, 100989, 124347, 290143, 373041, 870429, 2031001, 2611287, 6093003, 18279009]

約数ペア:

[(1, 18279009), (3, 6093003), (7, 2611287), (9, 2031001), (21, 870429), (49, 373041), (63, 290143), (147, 124347), (181, 100989), (229, 79821), (441, 41449), (543, 33663), (687, 26607), (1267, 14427), (1603, 11403), (1629, 11221), (2061, 8869), (3801, 4809)]