20791276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{6473}}^1$

素因数の和:6561

約数の個数: 24

約数和(自身を含む): 40242384

約数和(自身を除く): 19451108

約数列:

[1, 2, 4, 11, 22, 44, 73, 146, 292, 803, 1606, 3212, 6473, 12946, 25892, 71203, 142406, 284812, 472529, 945058, 1890116, 5197819, 10395638, 20791276]

約数ペア:

[(1, 20791276), (2, 10395638), (4, 5197819), (11, 1890116), (22, 945058), (44, 472529), (73, 284812), (146, 142406), (292, 71203), (803, 25892), (1606, 12946), (3212, 6473)]