81939824

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{19927}}^1$

素因数の和:20192

約数の個数: 20

約数和(自身を含む): 159384144

約数和(自身を除く): 77444320

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 19927, 39854, 79708, 159416, 318832, 5121239, 10242478, 20484956, 40969912, 81939824]

約数ペア:

[(1, 81939824), (2, 40969912), (4, 20484956), (8, 10242478), (16, 5121239), (257, 318832), (514, 159416), (1028, 79708), (2056, 39854), (4112, 19927)]