20639855

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1777}}^1$

素因数の和:1906

約数の個数: 16

約数和(自身を含む): 26115264

約数和(自身を除く): 5475409

約数列:

[1, 5, 23, 101, 115, 505, 1777, 2323, 8885, 11615, 40871, 179477, 204355, 897385, 4127971, 20639855]

約数ペア:

[(1, 20639855), (5, 4127971), (23, 897385), (101, 204355), (115, 179477), (505, 40871), (1777, 11615), (2323, 8885)]