71821940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211241}}^1$

素因数の和:211267

約数の個数: 24

約数和(自身を含む): 159698952

約数和(自身を除く): 87877012

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 211241, 422482, 844964, 1056205, 2112410, 3591097, 4224820, 7182194, 14364388, 17955485, 35910970, 71821940]

約数ペア:

[(1, 71821940), (2, 35910970), (4, 17955485), (5, 14364388), (10, 7182194), (17, 4224820), (20, 3591097), (34, 2112410), (68, 1056205), (85, 844964), (170, 422482), (340, 211241)]