81566919

素因数分解:

$3^4\times 7^2\times {\mathrm{20551}}^1$

素因数の和:20577

約数の個数: 30

約数和(自身を含む): 141747144

約数和(自身を除く): 60180225

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 20551, 61653, 143857, 184959, 431571, 554877, 1006999, 1294713, 1664631, 3020997, 3884139, 9062991, 11652417, 27188973, 81566919]

約数ペア:

[(1, 81566919), (3, 27188973), (7, 11652417), (9, 9062991), (21, 3884139), (27, 3020997), (49, 1664631), (63, 1294713), (81, 1006999), (147, 554877), (189, 431571), (441, 184959), (567, 143857), (1323, 61653), (3969, 20551)]