20889988

素因数分解:

$2^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{2903}}^1$

素因数の和:3171

約数の個数: 24

約数和(自身を含む): 41956992

約数和(自身を除く): 21067004

約数列:

[1, 2, 4, 7, 14, 28, 257, 514, 1028, 1799, 2903, 3598, 5806, 7196, 11612, 20321, 40642, 81284, 746071, 1492142, 2984284, 5222497, 10444994, 20889988]

約数ペア:

[(1, 20889988), (2, 10444994), (4, 5222497), (7, 2984284), (14, 1492142), (28, 746071), (257, 81284), (514, 40642), (1028, 20321), (1799, 11612), (2903, 7196), (3598, 5806)]