207654021

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{4481}}^1$

素因数の和:4777

約数の個数: 24

約数和(自身を含む): 316967040

約数和(自身を除く): 109313019

約数列:

[1, 3, 9, 19, 57, 171, 271, 813, 2439, 4481, 5149, 13443, 15447, 40329, 46341, 85139, 255417, 766251, 1214351, 3643053, 10929159, 23072669, 69218007, 207654021]

約数ペア:

[(1, 207654021), (3, 69218007), (9, 23072669), (19, 10929159), (57, 3643053), (171, 1214351), (271, 766251), (813, 255417), (2439, 85139), (4481, 46341), (5149, 40329), (13443, 15447)]