21209030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124759}}^1$

素因数の和:124783

約数の個数: 16

約数和(自身を含む): 40422240

約数和(自身を除く): 19213210

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124759, 249518, 623795, 1247590, 2120903, 4241806, 10604515, 21209030]

約数ペア:

[(1, 21209030), (2, 10604515), (5, 4241806), (10, 2120903), (17, 1247590), (34, 623795), (85, 249518), (170, 124759)]