20121556611

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1\times {\mathrm{6553}}^1$

素因数の和:8443

約数の個数: 32

約数和(自身を含む): 29585070592

約数和(自身を除く): 9463513981

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 1831, 5493, 6553, 19659, 23803, 71409, 78733, 85189, 236199, 255567, 281779, 845337, 1023529, 3070587, 3663127, 10989381, 11998543, 35995629, 155981059, 467943177, 515937349, 1547812047, 6707185537, 20121556611]

約数ペア:

[(1, 20121556611), (3, 6707185537), (13, 1547812047), (39, 515937349), (43, 467943177), (129, 155981059), (559, 35995629), (1677, 11998543), (1831, 10989381), (5493, 3663127), (6553, 3070587), (19659, 1023529), (23803, 845337), (71409, 281779), (78733, 255567), (85189, 236199)]