21101816

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25609}}^1$

素因数の和:25718

約数の個数: 16

約数和(自身を含む): 39951600

約数和(自身を除く): 18849784

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25609, 51218, 102436, 204872, 2637727, 5275454, 10550908, 21101816]

約数ペア:

[(1, 21101816), (2, 10550908), (4, 5275454), (8, 2637727), (103, 204872), (206, 102436), (412, 51218), (824, 25609)]