21091390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124067}}^1$

素因数の和:124091

約数の個数: 16

約数和(自身を含む): 40198032

約数和(自身を除く): 19106642

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124067, 248134, 620335, 1240670, 2109139, 4218278, 10545695, 21091390]

約数ペア:

[(1, 21091390), (2, 10545695), (5, 4218278), (10, 2109139), (17, 1240670), (34, 620335), (85, 248134), (170, 124067)]