19397781

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5717}}^1$

素因数の和:5765

約数の個数: 24

約数和(自身を含む): 31220280

約数和(自身を除く): 11822499

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 5717, 17151, 51453, 74321, 165793, 222963, 497379, 668889, 1492137, 2155309, 6465927, 19397781]

約数ペア:

[(1, 19397781), (3, 6465927), (9, 2155309), (13, 1492137), (29, 668889), (39, 497379), (87, 222963), (117, 165793), (261, 74321), (377, 51453), (1131, 17151), (3393, 5717)]