20709745

素因数分解:

$5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{7129}}^1$

素因数の和:7224

約数の個数: 16

約数和(自身を含む): 28748160

約数和(自身を除く): 8038415

約数列:

[1, 5, 7, 35, 83, 415, 581, 2905, 7129, 35645, 49903, 249515, 591707, 2958535, 4141949, 20709745]

約数ペア:

[(1, 20709745), (5, 4141949), (7, 2958535), (35, 591707), (83, 249515), (415, 49903), (581, 35645), (2905, 7129)]