81285616

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123911}}^1$

素因数の和:123960

約数の個数: 20

約数和(自身を含む): 161333424

約数和(自身を除く): 80047808

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123911, 247822, 495644, 991288, 1982576, 5080351, 10160702, 20321404, 40642808, 81285616]

約数ペア:

[(1, 81285616), (2, 40642808), (4, 20321404), (8, 10160702), (16, 5080351), (41, 1982576), (82, 991288), (164, 495644), (328, 247822), (656, 123911)]