21779989

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4637}}^1$

素因数の和:4716

約数の個数: 16

約数和(自身を含む): 27605376

約数和(自身を除く): 5825387

約数列:

[1, 7, 11, 61, 77, 427, 671, 4637, 4697, 32459, 51007, 282857, 357049, 1979999, 3111427, 21779989]

約数ペア:

[(1, 21779989), (7, 3111427), (11, 1979999), (61, 357049), (77, 282857), (427, 51007), (671, 32459), (4637, 4697)]