28151255

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 40857600

約数和(自身を除く): 12706345

約数列:

[1, 5, 11, 19, 31, 55, 79, 95, 121, 155, 209, 341, 395, 589, 605, 869, 1045, 1501, 1705, 2299, 2449, 2945, 3751, 4345, 6479, 7505, 9559, 11495, 12245, 16511, 18755, 26939, 32395, 46531, 47795, 71269, 82555, 134695, 181621, 232655, 296329, 356345, 511841, 908105, 1481645, 2559205, 5630251, 28151255]

約数ペア:

[(1, 28151255), (5, 5630251), (11, 2559205), (19, 1481645), (31, 908105), (55, 511841), (79, 356345), (95, 296329), (121, 232655), (155, 181621), (209, 134695), (341, 82555), (395, 71269), (589, 47795), (605, 46531), (869, 32395), (1045, 26939), (1501, 18755), (1705, 16511), (2299, 12245), (2449, 11495), (2945, 9559), (3751, 7505), (4345, 6479)]