21165179

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 24960960

約数和(自身を除く): 3795781

約数列:

[1, 7, 53, 89, 371, 623, 641, 4487, 4717, 33019, 33973, 57049, 237811, 399343, 3023597, 21165179]

約数ペア:

[(1, 21165179), (7, 3023597), (53, 399343), (89, 237811), (371, 57049), (623, 33973), (641, 33019), (4487, 4717)]