21965867

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 28268352

約数和(自身を除く): 6302485

約数列:

[1, 7, 11, 49, 77, 83, 491, 539, 581, 913, 3437, 4067, 5401, 6391, 24059, 37807, 40753, 44737, 264649, 285271, 448283, 1996897, 3137981, 21965867]

約数ペア:

[(1, 21965867), (7, 3137981), (11, 1996897), (49, 448283), (77, 285271), (83, 264649), (491, 44737), (539, 40753), (581, 37807), (913, 24059), (3437, 6391), (4067, 5401)]