20820256

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15131}}^1$

素因数の和:15184

約数の個数: 24

約数和(自身を含む): 41945904

約数和(自身を除く): 21125648

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15131, 30262, 60524, 121048, 242096, 484192, 650633, 1301266, 2602532, 5205064, 10410128, 20820256]

約数ペア:

[(1, 20820256), (2, 10410128), (4, 5205064), (8, 2602532), (16, 1301266), (32, 650633), (43, 484192), (86, 242096), (172, 121048), (344, 60524), (688, 30262), (1376, 15131)]