18985991

素因数分解:

${\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:374

約数の個数: 16

約数和(自身を含む): 20759040

約数和(自身を除く): 1773049

約数列:

[1, 17, 67, 79, 211, 1139, 1343, 3587, 5293, 14137, 16669, 89981, 240329, 283373, 1116823, 18985991]

約数ペア:

[(1, 18985991), (17, 1116823), (67, 283373), (79, 240329), (211, 89981), (1139, 16669), (1343, 14137), (3587, 5293)]