21721272

素因数分解:

$2^3\times 3^1\times {\mathrm{905053}}^1$

素因数の和:905062

約数の個数: 16

約数和(自身を含む): 54303240

約数和(自身を除く): 32581968

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 905053, 1810106, 2715159, 3620212, 5430318, 7240424, 10860636, 21721272]

約数ペア:

[(1, 21721272), (2, 10860636), (3, 7240424), (4, 5430318), (6, 3620212), (8, 2715159), (12, 1810106), (24, 905053)]