18859997

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{883}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 21385728

約数和(自身を除く): 2525731

約数列:

[1, 13, 31, 53, 403, 689, 883, 1643, 11479, 21359, 27373, 46799, 355849, 608387, 1450769, 18859997]

約数ペア:

[(1, 18859997), (13, 1450769), (31, 608387), (53, 355849), (403, 46799), (689, 27373), (883, 21359), (1643, 11479)]