81269872

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123887}}^1$

素因数の和:123936

約数の個数: 20

約数和(自身を含む): 161302176

約数和(自身を除く): 80032304

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123887, 247774, 495548, 991096, 1982192, 5079367, 10158734, 20317468, 40634936, 81269872]

約数ペア:

[(1, 81269872), (2, 40634936), (4, 20317468), (8, 10158734), (16, 5079367), (41, 1982192), (82, 991096), (164, 495548), (328, 247774), (656, 123887)]