18916417

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{643}}^1$

素因数の和:760

約数の個数: 16

約数和(自身を含む): 21349888

約数和(自身を除く): 2433471

約数列:

[1, 13, 31, 73, 403, 643, 949, 2263, 8359, 19933, 29419, 46939, 259129, 610207, 1455109, 18916417]

約数ペア:

[(1, 18916417), (13, 1455109), (31, 610207), (73, 259129), (403, 46939), (643, 29419), (949, 19933), (2263, 8359)]