19139183

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1118

約数の個数: 16

約数和(自身を含む): 22855680

約数和(自身を除く): 3716497

約数列:

[1, 7, 31, 89, 217, 623, 991, 2759, 6937, 19313, 30721, 88199, 215047, 617393, 2734169, 19139183]

約数ペア:

[(1, 19139183), (7, 2734169), (31, 617393), (89, 215047), (217, 88199), (623, 30721), (991, 19313), (2759, 6937)]