18820879

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4007}}^1$

素因数の和:4086

約数の個数: 16

約数和(自身を含む): 23855616

約数和(自身を除く): 5034737

約数列:

[1, 7, 11, 61, 77, 427, 671, 4007, 4697, 28049, 44077, 244427, 308539, 1710989, 2688697, 18820879]

約数ペア:

[(1, 18820879), (7, 2688697), (11, 1710989), (61, 308539), (77, 244427), (427, 44077), (671, 28049), (4007, 4697)]