20164042940

素因数分解:

$2^2\times 5^1\times {\mathrm{2591}}^1\times {\mathrm{389117}}^1$

素因数の和:391717

約数の個数: 24

約数和(自身を含む): 42360941952

約数和(自身を除く): 22196899012

約数列:

[1, 2, 4, 5, 10, 20, 2591, 5182, 10364, 12955, 25910, 51820, 389117, 778234, 1556468, 1945585, 3891170, 7782340, 1008202147, 2016404294, 4032808588, 5041010735, 10082021470, 20164042940]

約数ペア:

[(1, 20164042940), (2, 10082021470), (4, 5041010735), (5, 4032808588), (10, 2016404294), (20, 1008202147), (2591, 7782340), (5182, 3891170), (10364, 1945585), (12955, 1556468), (25910, 778234), (51820, 389117)]