21050186576

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4681981}}^1$

素因数の和:4682270

約数の個数: 20

約数和(自身を含む): 40929886644

約数和(自身を除く): 19879700068

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4681981, 9363962, 18727924, 37455848, 74911696, 1315636661, 2631273322, 5262546644, 10525093288, 21050186576]

約数ペア:

[(1, 21050186576), (2, 10525093288), (4, 5262546644), (8, 2631273322), (16, 1315636661), (281, 74911696), (562, 37455848), (1124, 18727924), (2248, 9363962), (4496, 4681981)]