81652820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{51679}}^1$

素因数の和:51767

約数の個数: 24

約数和(自身を含む): 173644800

約数和(自身を除く): 91991980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 51679, 103358, 206716, 258395, 516790, 1033580, 4082641, 8165282, 16330564, 20413205, 40826410, 81652820]

約数ペア:

[(1, 81652820), (2, 40826410), (4, 20413205), (5, 16330564), (10, 8165282), (20, 4082641), (79, 1033580), (158, 516790), (316, 258395), (395, 206716), (790, 103358), (1580, 51679)]