18488979

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{463}}^1$

素因数の和:521

約数の個数: 40

約数和(自身を含む): 30317760

約数和(自身を除く): 11828781

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 459, 463, 493, 783, 1377, 1389, 1479, 2349, 4167, 4437, 7871, 12501, 13311, 13427, 23613, 37503, 39933, 40281, 70839, 120843, 212517, 228259, 362529, 637551, 684777, 1087587, 2054331, 6162993, 18488979]

約数ペア:

[(1, 18488979), (3, 6162993), (9, 2054331), (17, 1087587), (27, 684777), (29, 637551), (51, 362529), (81, 228259), (87, 212517), (153, 120843), (261, 70839), (459, 40281), (463, 39933), (493, 37503), (783, 23613), (1377, 13427), (1389, 13311), (1479, 12501), (2349, 7871), (4167, 4437)]