21275991

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11311}}^1$

素因数の和:11347

約数の個数: 24

約数和(自身を含む): 35293440

約数和(自身を除く): 14017449

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 11311, 33933, 101799, 124421, 214909, 373263, 644727, 1119789, 1934181, 2363999, 7091997, 21275991]

約数ペア:

[(1, 21275991), (3, 7091997), (9, 2363999), (11, 1934181), (19, 1119789), (33, 644727), (57, 373263), (99, 214909), (171, 124421), (209, 101799), (627, 33933), (1881, 11311)]