18616131

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:815

約数の個数: 24

約数和(自身を含む): 28304640

約数和(自身を除く): 9688509

約数列:

[1, 3, 9, 23, 69, 139, 207, 417, 647, 1251, 1941, 3197, 5823, 9591, 14881, 28773, 44643, 89933, 133929, 269799, 809397, 2068459, 6205377, 18616131]

約数ペア:

[(1, 18616131), (3, 6205377), (9, 2068459), (23, 809397), (69, 269799), (139, 133929), (207, 89933), (417, 44643), (647, 28773), (1251, 14881), (1941, 9591), (3197, 5823)]