20395418

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{769}}^1$

素因数の和:1009

約数の個数: 16

約数和(自身を含む): 31185000

約数和(自身を除く): 10789582

約数列:

[1, 2, 89, 149, 178, 298, 769, 1538, 13261, 26522, 68441, 114581, 136882, 229162, 10197709, 20395418]

約数ペア:

[(1, 20395418), (2, 10197709), (89, 229162), (149, 136882), (178, 114581), (298, 68441), (769, 26522), (1538, 13261)]