21740656

素因数分解:

$2^4\times 7^1\times {\mathrm{194113}}^1$

素因数の和:194128

約数の個数: 20

約数和(自身を含む): 48140272

約数和(自身を除く): 26399616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194113, 388226, 776452, 1358791, 1552904, 2717582, 3105808, 5435164, 10870328, 21740656]

約数ペア:

[(1, 21740656), (2, 10870328), (4, 5435164), (7, 3105808), (8, 2717582), (14, 1552904), (16, 1358791), (28, 776452), (56, 388226), (112, 194113)]