20988128

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2179}}^1$

素因数の和:2239

約数の個数: 48

約数和(自身を含む): 48343680

約数和(自身を除く): 27355552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 86, 112, 172, 224, 301, 344, 602, 688, 1204, 1376, 2179, 2408, 4358, 4816, 8716, 9632, 15253, 17432, 30506, 34864, 61012, 69728, 93697, 122024, 187394, 244048, 374788, 488096, 655879, 749576, 1311758, 1499152, 2623516, 2998304, 5247032, 10494064, 20988128]

約数ペア:

[(1, 20988128), (2, 10494064), (4, 5247032), (7, 2998304), (8, 2623516), (14, 1499152), (16, 1311758), (28, 749576), (32, 655879), (43, 488096), (56, 374788), (86, 244048), (112, 187394), (172, 122024), (224, 93697), (301, 69728), (344, 61012), (602, 34864), (688, 30506), (1204, 17432), (1376, 15253), (2179, 9632), (2408, 8716), (4358, 4816)]