20653885

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25657}}^1$

素因数の和:25692

約数の個数: 16

約数和(自身を含む): 29558016

約数和(自身を除く): 8904131

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25657, 128285, 179599, 590111, 897995, 2950555, 4130777, 20653885]

約数ペア:

[(1, 20653885), (5, 4130777), (7, 2950555), (23, 897995), (35, 590111), (115, 179599), (161, 128285), (805, 25657)]