217991495939

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{121453}}^1$

素因数の和:121659

約数の個数: 32

約数和(自身を含む): 261641064960

約数和(自身を除く): 43649569021

約数列:

[1, 7, 43, 67, 89, 301, 469, 623, 2881, 3827, 5963, 20167, 26789, 41741, 121453, 256409, 850171, 1794863, 5222479, 8137351, 10809317, 36557353, 56961457, 75665219, 349906093, 464800631, 724224239, 2449342651, 3253604417, 5069569673, 31141642277, 217991495939]

約数ペア:

[(1, 217991495939), (7, 31141642277), (43, 5069569673), (67, 3253604417), (89, 2449342651), (301, 724224239), (469, 464800631), (623, 349906093), (2881, 75665219), (3827, 56961457), (5963, 36557353), (20167, 10809317), (26789, 8137351), (41741, 5222479), (121453, 1794863), (256409, 850171)]