21857192

素因数分解:

$2^3\times 7^1\times {\mathrm{390307}}^1$

素因数の和:390320

約数の個数: 16

約数和(自身を含む): 46836960

約数和(自身を除く): 24979768

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390307, 780614, 1561228, 2732149, 3122456, 5464298, 10928596, 21857192]

約数ペア:

[(1, 21857192), (2, 10928596), (4, 5464298), (7, 3122456), (8, 2732149), (14, 1561228), (28, 780614), (56, 390307)]