28651161

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4001}}^1$

素因数の和:4053

約数の個数: 32

約数和(自身を含む): 49176576

約数和(自身を除く): 20525415

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 4001, 7161, 12003, 28007, 44011, 84021, 124031, 132033, 308077, 372093, 868217, 924231, 1364341, 2604651, 4093023, 9550387, 28651161]

約数ペア:

[(1, 28651161), (3, 9550387), (7, 4093023), (11, 2604651), (21, 1364341), (31, 924231), (33, 868217), (77, 372093), (93, 308077), (217, 132033), (231, 124031), (341, 84021), (651, 44011), (1023, 28007), (2387, 12003), (4001, 7161)]