20556621

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 33611760

約数和(自身を除く): 13055139

約数列:

[1, 3, 9, 17, 29, 41, 51, 87, 113, 123, 153, 261, 339, 369, 493, 697, 1017, 1189, 1479, 1921, 2091, 3277, 3567, 4437, 4633, 5763, 6273, 9831, 10701, 13899, 17289, 20213, 29493, 41697, 55709, 60639, 78761, 134357, 167127, 181917, 236283, 403071, 501381, 708849, 1209213, 2284069, 6852207, 20556621]

約数ペア:

[(1, 20556621), (3, 6852207), (9, 2284069), (17, 1209213), (29, 708849), (41, 501381), (51, 403071), (87, 236283), (113, 181917), (123, 167127), (153, 134357), (261, 78761), (339, 60639), (369, 55709), (493, 41697), (697, 29493), (1017, 20213), (1189, 17289), (1479, 13899), (1921, 10701), (2091, 9831), (3277, 6273), (3567, 5763), (4437, 4633)]