816390421

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{30911}}^1$

素因数の和:30950

約数の個数: 20

約数和(自身を含む): 1039014144

約数和(自身を除く): 222623723

約数列:

[1, 7, 11, 49, 77, 343, 539, 2401, 3773, 26411, 30911, 216377, 340021, 1514639, 2380147, 10602473, 16661029, 74217311, 116627203, 816390421]

約数ペア:

[(1, 816390421), (7, 116627203), (11, 74217311), (49, 16661029), (77, 10602473), (343, 2380147), (539, 1514639), (2401, 340021), (3773, 216377), (26411, 30911)]