28478780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129449}}^1$

素因数の和:129469

約数の個数: 24

約数和(自身を含む): 65242800

約数和(自身を除く): 36764020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 129449, 258898, 517796, 647245, 1294490, 1423939, 2588980, 2847878, 5695756, 7119695, 14239390, 28478780]

約数ペア:

[(1, 28478780), (2, 14239390), (4, 7119695), (5, 5695756), (10, 2847878), (11, 2588980), (20, 1423939), (22, 1294490), (44, 647245), (55, 517796), (110, 258898), (220, 129449)]