28668549

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5527}}^1$

素因数の和:5569

約数の個数: 32

約数和(自身を含む): 49530880

約数和(自身を除く): 20862331

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 5527, 16581, 38689, 71851, 105013, 116067, 215553, 315039, 502957, 735091, 1365169, 1508871, 2205273, 4095507, 9556183, 28668549]

約数ペア:

[(1, 28668549), (3, 9556183), (7, 4095507), (13, 2205273), (19, 1508871), (21, 1365169), (39, 735091), (57, 502957), (91, 315039), (133, 215553), (247, 116067), (273, 105013), (399, 71851), (741, 38689), (1729, 16581), (5187, 5527)]