19717790

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{115987}}^1$

素因数の和:116011

約数の個数: 16

約数和(自身を含む): 37580112

約数和(自身を除く): 17862322

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 115987, 231974, 579935, 1159870, 1971779, 3943558, 9858895, 19717790]

約数ペア:

[(1, 19717790), (2, 9858895), (5, 3943558), (10, 1971779), (17, 1159870), (34, 579935), (85, 231974), (170, 115987)]