19887159

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{997}}^1$

素因数の和:1170

約数の個数: 16

約数和(自身を含む): 27225440

約数和(自身を除く): 7338281

約数列:

[1, 3, 61, 109, 183, 327, 997, 2991, 6649, 19947, 60817, 108673, 182451, 326019, 6629053, 19887159]

約数ペア:

[(1, 19887159), (3, 6629053), (61, 326019), (109, 182451), (183, 108673), (327, 60817), (997, 19947), (2991, 6649)]