18985879

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{743}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 21855744

約数和(自身を除く): 2869865

約数列:

[1, 11, 23, 101, 253, 743, 1111, 2323, 8173, 17089, 25553, 75043, 187979, 825473, 1725989, 18985879]

約数ペア:

[(1, 18985879), (11, 1725989), (23, 825473), (101, 187979), (253, 75043), (743, 25553), (1111, 17089), (2323, 8173)]