21998170

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{129401}}^1$

素因数の和:129425

約数の個数: 16

約数和(自身を含む): 41926248

約数和(自身を除く): 19928078

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 129401, 258802, 647005, 1294010, 2199817, 4399634, 10999085, 21998170]

約数ペア:

[(1, 21998170), (2, 10999085), (5, 4399634), (10, 2199817), (17, 1294010), (34, 647005), (85, 258802), (170, 129401)]