21080170

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124001}}^1$

素因数の和:124025

約数の個数: 16

約数和(自身を含む): 40176648

約数和(自身を除く): 19096478

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124001, 248002, 620005, 1240010, 2108017, 4216034, 10540085, 21080170]

約数ペア:

[(1, 21080170), (2, 10540085), (5, 4216034), (10, 2108017), (17, 1240010), (34, 620005), (85, 248002), (170, 124001)]