18639488

素因数分解:

$2^7\times 7^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 24543232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 224, 284, 293, 448, 497, 568, 586, 896, 994, 1136, 1172, 1988, 2051, 2272, 2344, 3976, 4102, 4544, 4688, 7952, 8204, 9088, 9376, 15904, 16408, 18752, 20803, 31808, 32816, 37504, 41606, 63616, 65632, 83212, 131264, 145621, 166424, 262528, 291242, 332848, 582484, 665696, 1164968, 1331392, 2329936, 2662784, 4659872, 9319744, 18639488]

約数ペア:

[(1, 18639488), (2, 9319744), (4, 4659872), (7, 2662784), (8, 2329936), (14, 1331392), (16, 1164968), (28, 665696), (32, 582484), (56, 332848), (64, 291242), (71, 262528), (112, 166424), (128, 145621), (142, 131264), (224, 83212), (284, 65632), (293, 63616), (448, 41606), (497, 37504), (568, 32816), (586, 31808), (896, 20803), (994, 18752), (1136, 16408), (1172, 15904), (1988, 9376), (2051, 9088), (2272, 8204), (2344, 7952), (3976, 4688), (4102, 4544)]