28208295

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 51347712

約数和(自身を除く): 23139417

約数列:

[1, 3, 5, 9, 15, 31, 45, 73, 93, 155, 219, 277, 279, 365, 465, 657, 831, 1095, 1385, 1395, 2263, 2493, 3285, 4155, 6789, 8587, 11315, 12465, 20221, 20367, 25761, 33945, 42935, 60663, 77283, 101105, 101835, 128805, 181989, 303315, 386415, 626851, 909945, 1880553, 3134255, 5641659, 9402765, 28208295]

約数ペア:

[(1, 28208295), (3, 9402765), (5, 5641659), (9, 3134255), (15, 1880553), (31, 909945), (45, 626851), (73, 386415), (93, 303315), (155, 181989), (219, 128805), (277, 101835), (279, 101105), (365, 77283), (465, 60663), (657, 42935), (831, 33945), (1095, 25761), (1385, 20367), (1395, 20221), (2263, 12465), (2493, 11315), (3285, 8587), (4155, 6789)]