20508320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18311}}^1$

素因数の和:18333

約数の個数: 48

約数和(自身を含む): 55375488

約数和(自身を除く): 34867168

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, 18311, 36622, 73244, 91555, 128177, 146488, 183110, 256354, 292976, 366220, 512708, 585952, 640885, 732440, 1025416, 1281770, 1464880, 2050832, 2563540, 2929760, 4101664, 5127080, 10254160, 20508320]

約数ペア:

[(1, 20508320), (2, 10254160), (4, 5127080), (5, 4101664), (7, 2929760), (8, 2563540), (10, 2050832), (14, 1464880), (16, 1281770), (20, 1025416), (28, 732440), (32, 640885), (35, 585952), (40, 512708), (56, 366220), (70, 292976), (80, 256354), (112, 183110), (140, 146488), (160, 128177), (224, 91555), (280, 73244), (560, 36622), (1120, 18311)]