20987136

素因数分解:

$2^8\times 3^2\times {\mathrm{9109}}^1$

素因数の和:9131

約数の個数: 54

約数和(自身を含む): 60517730

約数和(自身を除く): 39530594

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 128, 144, 192, 256, 288, 384, 576, 768, 1152, 2304, 9109, 18218, 27327, 36436, 54654, 72872, 81981, 109308, 145744, 163962, 218616, 291488, 327924, 437232, 582976, 655848, 874464, 1165952, 1311696, 1748928, 2331904, 2623392, 3497856, 5246784, 6995712, 10493568, 20987136]

約数ペア:

[(1, 20987136), (2, 10493568), (3, 6995712), (4, 5246784), (6, 3497856), (8, 2623392), (9, 2331904), (12, 1748928), (16, 1311696), (18, 1165952), (24, 874464), (32, 655848), (36, 582976), (48, 437232), (64, 327924), (72, 291488), (96, 218616), (128, 163962), (144, 145744), (192, 109308), (256, 81981), (288, 72872), (384, 54654), (576, 36436), (768, 27327), (1152, 18218), (2304, 9109)]