21074211

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 32235840

約数和(自身を除く): 11161629

約数列:

[1, 3, 9, 19, 57, 171, 251, 491, 753, 1473, 2259, 4419, 4769, 9329, 14307, 27987, 42921, 83961, 123241, 369723, 1109169, 2341579, 7024737, 21074211]

約数ペア:

[(1, 21074211), (3, 7024737), (9, 2341579), (19, 1109169), (57, 369723), (171, 123241), (251, 83961), (491, 42921), (753, 27987), (1473, 14307), (2259, 9329), (4419, 4769)]