21085336

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25589}}^1$

素因数の和:25698

約数の個数: 16

約数和(自身を含む): 39920400

約数和(自身を除く): 18835064

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25589, 51178, 102356, 204712, 2635667, 5271334, 10542668, 21085336]

約数ペア:

[(1, 21085336), (2, 10542668), (4, 5271334), (8, 2635667), (103, 204712), (206, 102356), (412, 51178), (824, 25589)]