20561245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3407}}^1$

素因数の和:3500

約数の個数: 16

約数和(自身を含む): 26500608

約数和(自身を除く): 5939363

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3407, 6035, 17035, 57919, 241897, 289595, 1209485, 4112249, 20561245]

約数ペア:

[(1, 20561245), (5, 4112249), (17, 1209485), (71, 289595), (85, 241897), (355, 57919), (1207, 17035), (3407, 6035)]