21187256

素因数分解:

$2^3\times {\mathrm{1117}}^1\times {\mathrm{2371}}^1$

素因数の和:3494

約数の個数: 16

約数和(自身を含む): 39778440

約数和(自身を除く): 18591184

約数列:

[1, 2, 4, 8, 1117, 2234, 2371, 4468, 4742, 8936, 9484, 18968, 2648407, 5296814, 10593628, 21187256]

約数ペア:

[(1, 21187256), (2, 10593628), (4, 5296814), (8, 2648407), (1117, 18968), (2234, 9484), (2371, 8936), (4468, 4742)]