21017766

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:194

約数の個数: 96

約数和(自身を含む): 54698112

約数和(自身を除く): 33680346

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 67, 77, 97, 98, 134, 147, 154, 194, 201, 231, 291, 294, 402, 462, 469, 539, 582, 679, 737, 938, 1067, 1078, 1358, 1407, 1474, 1617, 2037, 2134, 2211, 2814, 3201, 3234, 3283, 4074, 4422, 4753, 5159, 6402, 6499, 6566, 7469, 9506, 9849, 10318, 12998, 14259, 14938, 15477, 19497, 19698, 22407, 28518, 30954, 36113, 38994, 44814, 45493, 52283, 71489, 72226, 90986, 104566, 108339, 136479, 142978, 156849, 214467, 216678, 272958, 313698, 318451, 428934, 500423, 636902, 955353, 1000846, 1501269, 1910706, 3002538, 3502961, 7005922, 10508883, 21017766]

約数ペア:

[(1, 21017766), (2, 10508883), (3, 7005922), (6, 3502961), (7, 3002538), (11, 1910706), (14, 1501269), (21, 1000846), (22, 955353), (33, 636902), (42, 500423), (49, 428934), (66, 318451), (67, 313698), (77, 272958), (97, 216678), (98, 214467), (134, 156849), (147, 142978), (154, 136479), (194, 108339), (201, 104566), (231, 90986), (291, 72226), (294, 71489), (402, 52283), (462, 45493), (469, 44814), (539, 38994), (582, 36113), (679, 30954), (737, 28518), (938, 22407), (1067, 19698), (1078, 19497), (1358, 15477), (1407, 14938), (1474, 14259), (1617, 12998), (2037, 10318), (2134, 9849), (2211, 9506), (2814, 7469), (3201, 6566), (3234, 6499), (3283, 6402), (4074, 5159), (4422, 4753)]