81323140

素因数分解:

$2^2\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{3727}}^1$

素因数の和:4827

約数の個数: 24

約数和(自身を含む): 170980992

約数和(自身を除く): 89657852

約数列:

[1, 2, 4, 5, 10, 20, 1091, 2182, 3727, 4364, 5455, 7454, 10910, 14908, 18635, 21820, 37270, 74540, 4066157, 8132314, 16264628, 20330785, 40661570, 81323140]

約数ペア:

[(1, 81323140), (2, 40661570), (4, 20330785), (5, 16264628), (10, 8132314), (20, 4066157), (1091, 74540), (2182, 37270), (3727, 21820), (4364, 18635), (5455, 14908), (7454, 10910)]