81665940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1361099}}^1$

素因数の和:1361111

約数の個数: 24

約数和(自身を含む): 228664800

約数和(自身を除く): 146998860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1361099, 2722198, 4083297, 5444396, 6805495, 8166594, 13610990, 16333188, 20416485, 27221980, 40832970, 81665940]

約数ペア:

[(1, 81665940), (2, 40832970), (3, 27221980), (4, 20416485), (5, 16333188), (6, 13610990), (10, 8166594), (12, 6805495), (15, 5444396), (20, 4083297), (30, 2722198), (60, 1361099)]