19993939

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{479}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 23500800

約数和(自身を除く): 3506861

約数列:

[1, 7, 67, 89, 469, 479, 623, 3353, 5963, 32093, 41741, 42631, 224651, 298417, 2856277, 19993939]

約数ペア:

[(1, 19993939), (7, 2856277), (67, 298417), (89, 224651), (469, 42631), (479, 41741), (623, 32093), (3353, 5963)]