20904858

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 50709120

約数和(自身を除く): 29804262

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 97, 117, 194, 234, 291, 307, 351, 582, 614, 702, 873, 921, 1261, 1746, 1842, 2522, 2619, 2763, 3783, 3991, 5238, 5526, 7566, 7982, 8289, 11349, 11973, 16578, 22698, 23946, 29779, 34047, 35919, 59558, 68094, 71838, 89337, 107757, 178674, 215514, 268011, 387127, 536022, 774254, 804033, 1161381, 1608066, 2322762, 3484143, 6968286, 10452429, 20904858]

約数ペア:

[(1, 20904858), (2, 10452429), (3, 6968286), (6, 3484143), (9, 2322762), (13, 1608066), (18, 1161381), (26, 804033), (27, 774254), (39, 536022), (54, 387127), (78, 268011), (97, 215514), (117, 178674), (194, 107757), (234, 89337), (291, 71838), (307, 68094), (351, 59558), (582, 35919), (614, 34047), (702, 29779), (873, 23946), (921, 22698), (1261, 16578), (1746, 11973), (1842, 11349), (2522, 8289), (2619, 7982), (2763, 7566), (3783, 5526), (3991, 5238)]