21199041

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{821}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 32485440

約数和(自身を除く): 11286399

約数列:

[1, 3, 9, 19, 57, 151, 171, 453, 821, 1359, 2463, 2869, 7389, 8607, 15599, 25821, 46797, 123971, 140391, 371913, 1115739, 2355449, 7066347, 21199041]

約数ペア:

[(1, 21199041), (3, 7066347), (9, 2355449), (19, 1115739), (57, 371913), (151, 140391), (171, 123971), (453, 46797), (821, 25821), (1359, 15599), (2463, 8607), (2869, 7389)]