18249381

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 29925720

約数和(自身を除く): 11676339

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 457, 459, 493, 783, 1371, 1377, 1479, 2349, 4113, 4437, 7769, 12339, 13253, 13311, 23307, 37017, 39759, 39933, 69921, 119277, 209763, 225301, 357831, 629289, 675903, 1073493, 2027709, 6083127, 18249381]

約数ペア:

[(1, 18249381), (3, 6083127), (9, 2027709), (17, 1073493), (27, 675903), (29, 629289), (51, 357831), (81, 225301), (87, 209763), (153, 119277), (261, 69921), (457, 39933), (459, 39759), (493, 37017), (783, 23307), (1371, 13311), (1377, 13253), (1479, 12339), (2349, 7769), (4113, 4437)]