20735645

素因数分解:

$5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1523}}^1$

素因数の和:1924

約数の個数: 16

約数和(自身を含む): 28529280

約数和(自身を除く): 7793635

約数列:

[1, 5, 7, 35, 389, 1523, 1945, 2723, 7615, 10661, 13615, 53305, 592447, 2962235, 4147129, 20735645]

約数ペア:

[(1, 20735645), (5, 4147129), (7, 2962235), (35, 592447), (389, 53305), (1523, 13615), (1945, 10661), (2723, 7615)]