428780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1949}}^1$

素因数の和:1969

約数の個数: 24

約数和(自身を含む): 982800

約数和(自身を除く): 554020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1949, 3898, 7796, 9745, 19490, 21439, 38980, 42878, 85756, 107195, 214390, 428780]

約数ペア:

[(1, 428780), (2, 214390), (4, 107195), (5, 85756), (10, 42878), (11, 38980), (20, 21439), (22, 19490), (44, 9745), (55, 7796), (110, 3898), (220, 1949)]