18388017

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{421}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 27912768

約数和(自身を除く): 9524751

約数列:

[1, 3, 9, 23, 69, 207, 211, 421, 633, 1263, 1899, 3789, 4853, 9683, 14559, 29049, 43677, 87147, 88831, 266493, 799479, 2043113, 6129339, 18388017]

約数ペア:

[(1, 18388017), (3, 6129339), (9, 2043113), (23, 799479), (69, 266493), (207, 88831), (211, 87147), (421, 43677), (633, 29049), (1263, 14559), (1899, 9683), (3789, 4853)]