20900320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18661}}^1$

素因数の和:18683

約数の個数: 48

約数和(自身を含む): 56433888

約数和(自身を除く): 35533568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18661, 37322, 74644, 93305, 130627, 149288, 186610, 261254, 298576, 373220, 522508, 597152, 653135, 746440, 1045016, 1306270, 1492880, 2090032, 2612540, 2985760, 4180064, 5225080, 10450160, 20900320]

約数ペア:

[(1, 20900320), (2, 10450160), (4, 5225080), (5, 4180064), (7, 2985760), (8, 2612540), (10, 2090032), (14, 1492880), (16, 1306270), (20, 1045016), (28, 746440), (32, 653135), (35, 597152), (40, 522508), (56, 373220), (70, 298576), (80, 261254), (112, 186610), (140, 149288), (160, 130627), (224, 93305), (280, 74644), (560, 37322), (1120, 18661)]