21186795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 41877504

約数和(自身を除く): 20690709

約数列:

[1, 3, 5, 7, 15, 21, 23, 31, 35, 69, 93, 105, 115, 155, 161, 217, 283, 345, 465, 483, 651, 713, 805, 849, 1085, 1415, 1981, 2139, 2415, 3255, 3565, 4245, 4991, 5943, 6509, 8773, 9905, 10695, 14973, 19527, 24955, 26319, 29715, 32545, 43865, 45563, 61411, 74865, 97635, 131595, 136689, 184233, 201779, 227815, 307055, 605337, 683445, 921165, 1008895, 1412453, 3026685, 4237359, 7062265, 21186795]

約数ペア:

[(1, 21186795), (3, 7062265), (5, 4237359), (7, 3026685), (15, 1412453), (21, 1008895), (23, 921165), (31, 683445), (35, 605337), (69, 307055), (93, 227815), (105, 201779), (115, 184233), (155, 136689), (161, 131595), (217, 97635), (283, 74865), (345, 61411), (465, 45563), (483, 43865), (651, 32545), (713, 29715), (805, 26319), (849, 24955), (1085, 19527), (1415, 14973), (1981, 10695), (2139, 9905), (2415, 8773), (3255, 6509), (3565, 5943), (4245, 4991)]