20456667

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4217}}^1$

素因数の和:4248

約数の個数: 36

約数和(自身を含む): 37506456

約数和(自身を除く): 17049789

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4217, 4851, 12651, 29519, 37953, 46387, 88557, 139161, 206633, 265671, 324709, 417483, 619899, 974127, 1859697, 2272963, 2922381, 6818889, 20456667]

約数ペア:

[(1, 20456667), (3, 6818889), (7, 2922381), (9, 2272963), (11, 1859697), (21, 974127), (33, 619899), (49, 417483), (63, 324709), (77, 265671), (99, 206633), (147, 139161), (231, 88557), (441, 46387), (539, 37953), (693, 29519), (1617, 12651), (4217, 4851)]