19915973

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1429}}^1$

素因数の和:1628

約数の個数: 16

約数和(自身を含む): 24984960

約数和(自身を除く): 5068987

約数列:

[1, 7, 11, 77, 181, 1267, 1429, 1991, 10003, 13937, 15719, 110033, 258649, 1810543, 2845139, 19915973]

約数ペア:

[(1, 19915973), (7, 2845139), (11, 1810543), (77, 258649), (181, 110033), (1267, 15719), (1429, 13937), (1991, 10003)]