21956620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156833}}^1$

素因数の和:156849

約数の個数: 24

約数和(自身を含む): 52696224

約数和(自身を除く): 30739604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156833, 313666, 627332, 784165, 1097831, 1568330, 2195662, 3136660, 4391324, 5489155, 10978310, 21956620]

約数ペア:

[(1, 21956620), (2, 10978310), (4, 5489155), (5, 4391324), (7, 3136660), (10, 2195662), (14, 1568330), (20, 1097831), (28, 784165), (35, 627332), (70, 313666), (140, 156833)]