19990943

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 16

約数和(自身を含む): 23347200

約数和(自身を除く): 3356257

約数列:

[1, 7, 113, 127, 199, 791, 889, 1393, 14351, 22487, 25273, 100457, 157409, 176911, 2855849, 19990943]

約数ペア:

[(1, 19990943), (7, 2855849), (113, 176911), (127, 157409), (199, 100457), (791, 25273), (889, 22487), (1393, 14351)]