21502229

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 26889408

約数和(自身を除く): 5387179

約数列:

[1, 7, 17, 49, 83, 119, 311, 581, 833, 1411, 2177, 4067, 5287, 9877, 15239, 25813, 37009, 69139, 180691, 259063, 438821, 1264837, 3071747, 21502229]

約数ペア:

[(1, 21502229), (7, 3071747), (17, 1264837), (49, 438821), (83, 259063), (119, 180691), (311, 69139), (581, 37009), (833, 25813), (1411, 15239), (2177, 9877), (4067, 5287)]