28856009

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 37545984

約数和(自身を除く): 8689975

約数列:

[1, 7, 13, 31, 53, 91, 193, 217, 371, 403, 689, 1351, 1643, 2509, 2821, 4823, 5983, 10229, 11501, 17563, 21359, 41881, 71603, 77779, 132977, 149513, 317099, 544453, 930839, 2219693, 4122287, 28856009]

約数ペア:

[(1, 28856009), (7, 4122287), (13, 2219693), (31, 930839), (53, 544453), (91, 317099), (193, 149513), (217, 132977), (371, 77779), (403, 71603), (689, 41881), (1351, 21359), (1643, 17563), (2509, 11501), (2821, 10229), (4823, 5983)]