21580191

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3001}}^1$

素因数の和:3071

約数の個数: 24

約数和(自身を含む): 33718464

約数和(自身を除く): 12138273

約数列:

[1, 3, 9, 17, 47, 51, 141, 153, 423, 799, 2397, 3001, 7191, 9003, 27009, 51017, 141047, 153051, 423141, 459153, 1269423, 2397799, 7193397, 21580191]

約数ペア:

[(1, 21580191), (3, 7193397), (9, 2397799), (17, 1269423), (47, 459153), (51, 423141), (141, 153051), (153, 141047), (423, 51017), (799, 27009), (2397, 9003), (3001, 7191)]