81916060

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{4133}}^1$

素因数の和:5133

約数の個数: 24

約数和(自身を含む): 172238976

約数和(自身を除く): 90322916

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4133, 4955, 8266, 9910, 16532, 19820, 20665, 41330, 82660, 4095803, 8191606, 16383212, 20479015, 40958030, 81916060]

約数ペア:

[(1, 81916060), (2, 40958030), (4, 20479015), (5, 16383212), (10, 8191606), (20, 4095803), (991, 82660), (1982, 41330), (3964, 20665), (4133, 19820), (4955, 16532), (8266, 9910)]