20559896

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5171}}^1$

素因数の和:5255

約数の個数: 32

約数和(自身を含む): 44686080

約数和(自身を除く): 24126184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5171, 10342, 20684, 36197, 41368, 72394, 144788, 289576, 367141, 734282, 1468564, 2569987, 2937128, 5139974, 10279948, 20559896]

約数ペア:

[(1, 20559896), (2, 10279948), (4, 5139974), (7, 2937128), (8, 2569987), (14, 1468564), (28, 734282), (56, 367141), (71, 289576), (142, 144788), (284, 72394), (497, 41368), (568, 36197), (994, 20684), (1988, 10342), (3976, 5171)]