20191718

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{5261}}^1$

素因数の和:5383

約数の個数: 16

約数和(自身を含む): 32203440

約数和(自身を除く): 12011722

約数列:

[1, 2, 19, 38, 101, 202, 1919, 3838, 5261, 10522, 99959, 199918, 531361, 1062722, 10095859, 20191718]

約数ペア:

[(1, 20191718), (2, 10095859), (19, 1062722), (38, 531361), (101, 199918), (202, 99959), (1919, 10522), (3838, 5261)]