20866256

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{68639}}^1$

素因数の和:68666

約数の個数: 20

約数和(自身を含む): 42556800

約数和(自身を除く): 21690544

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 68639, 137278, 274556, 549112, 1098224, 1304141, 2608282, 5216564, 10433128, 20866256]

約数ペア:

[(1, 20866256), (2, 10433128), (4, 5216564), (8, 2608282), (16, 1304141), (19, 1098224), (38, 549112), (76, 274556), (152, 137278), (304, 68639)]