20285005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10067}}^1$

素因数の和:10116

約数の個数: 16

約数和(自身を含む): 27062784

約数和(自身を除く): 6777779

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10067, 50335, 130871, 312077, 654355, 1560385, 4057001, 20285005]

約数ペア:

[(1, 20285005), (5, 4057001), (13, 1560385), (31, 654355), (65, 312077), (155, 130871), (403, 50335), (2015, 10067)]