21096872

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25603}}^1$

素因数の和:25712

約数の個数: 16

約数和(自身を含む): 39942240

約数和(自身を除く): 18845368

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25603, 51206, 102412, 204824, 2637109, 5274218, 10548436, 21096872]

約数ペア:

[(1, 21096872), (2, 10548436), (4, 5274218), (8, 2637109), (103, 204824), (206, 102412), (412, 51206), (824, 25603)]