20321199

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:293

約数の個数: 40

約数和(自身を含む): 32321520

約数和(自身を除く): 12000321

約数列:

[1, 3, 9, 27, 29, 41, 81, 87, 123, 211, 261, 369, 633, 783, 1107, 1189, 1899, 2349, 3321, 3567, 5697, 6119, 8651, 10701, 17091, 18357, 25953, 32103, 55071, 77859, 96309, 165213, 233577, 250879, 495639, 700731, 752637, 2257911, 6773733, 20321199]

約数ペア:

[(1, 20321199), (3, 6773733), (9, 2257911), (27, 752637), (29, 700731), (41, 495639), (81, 250879), (87, 233577), (123, 165213), (211, 96309), (261, 77859), (369, 55071), (633, 32103), (783, 25953), (1107, 18357), (1189, 17091), (1899, 10701), (2349, 8651), (3321, 6119), (3567, 5697)]