80722280

素因数分解:

$2^3\times 5^1\times {\mathrm{947}}^1\times {\mathrm{2131}}^1$

素因数の和:3089

約数の個数: 32

約数和(自身を含む): 181902240

約数和(自身を除く): 101179960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 947, 1894, 2131, 3788, 4262, 4735, 7576, 8524, 9470, 10655, 17048, 18940, 21310, 37880, 42620, 85240, 2018057, 4036114, 8072228, 10090285, 16144456, 20180570, 40361140, 80722280]

約数ペア:

[(1, 80722280), (2, 40361140), (4, 20180570), (5, 16144456), (8, 10090285), (10, 8072228), (20, 4036114), (40, 2018057), (947, 85240), (1894, 42620), (2131, 37880), (3788, 21310), (4262, 18940), (4735, 17048), (7576, 10655), (8524, 9470)]