20161308881

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{15991}}^1$

素因数の和:16253

約数の個数: 32

約数和(自身を含む): 24760221696

約数和(自身を除く): 4598912815

約数列:

[1, 7, 23, 41, 161, 191, 287, 943, 1337, 4393, 6601, 7831, 15991, 30751, 54817, 111937, 180113, 367793, 655631, 1260791, 2574551, 3054281, 4589417, 15079513, 21379967, 70248463, 105556591, 125225521, 491739241, 876578647, 2880186983, 20161308881]

約数ペア:

[(1, 20161308881), (7, 2880186983), (23, 876578647), (41, 491739241), (161, 125225521), (191, 105556591), (287, 70248463), (943, 21379967), (1337, 15079513), (4393, 4589417), (6601, 3054281), (7831, 2574551), (15991, 1260791), (30751, 655631), (54817, 367793), (111937, 180113)]