20120151905

素因数分解:

$5^1\times 7^4\times {\mathrm{1675981}}^1$

素因数の和:1676014

約数の個数: 20

約数和(自身を含む): 28166553492

約数和(自身を除く): 8046401587

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 2401, 12005, 1675981, 8379905, 11731867, 58659335, 82123069, 410615345, 574861483, 2874307415, 4024030381, 20120151905]

約数ペア:

[(1, 20120151905), (5, 4024030381), (7, 2874307415), (35, 574861483), (49, 410615345), (245, 82123069), (343, 58659335), (1715, 11731867), (2401, 8379905), (12005, 1675981)]