20809019

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{5099}}^1$

素因数の和:5170

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 5629381

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 5099, 35693, 56089, 270247, 392623, 1891729, 2972717, 20809019]

約数ペア:

[(1, 20809019), (7, 2972717), (11, 1891729), (53, 392623), (77, 270247), (371, 56089), (583, 35693), (4081, 5099)]