20160178245980

素因数分解:

$2^2\times 5^1\times {\mathrm{989011}}^1\times {\mathrm{1019209}}^1$

素因数の和:2008229

約数の個数: 24

約数和(自身を含む): 42336458661840

約数和(自身を除く): 22176280415860

約数列:

[1, 2, 4, 5, 10, 20, 989011, 1019209, 1978022, 2038418, 3956044, 4076836, 4945055, 5096045, 9890110, 10192090, 19780220, 20384180, 1008008912299, 2016017824598, 4032035649196, 5040044561495, 10080089122990, 20160178245980]

約数ペア:

[(1, 20160178245980), (2, 10080089122990), (4, 5040044561495), (5, 4032035649196), (10, 2016017824598), (20, 1008008912299), (989011, 20384180), (1019209, 19780220), (1978022, 10192090), (2038418, 9890110), (3956044, 5096045), (4076836, 4945055)]