20287645

素因数分解:

$5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{4231}}^1$

素因数の和:4380

約数の個数: 16

約数和(自身を含む): 28032768

約数和(自身を除く): 7745123

約数列:

[1, 5, 7, 35, 137, 685, 959, 4231, 4795, 21155, 29617, 148085, 579647, 2898235, 4057529, 20287645]

約数ペア:

[(1, 20287645), (5, 4057529), (7, 2898235), (35, 579647), (137, 148085), (685, 29617), (959, 21155), (4231, 4795)]