20399386245

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27754267}}^1$

素因数の和:27754289

約数の個数: 24

約数和(自身を含む): 37967838624

約数和(自身を除く): 17568452379

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27754267, 83262801, 138771335, 194279869, 416314005, 582839607, 971399345, 1359959083, 2914198035, 4079877249, 6799795415, 20399386245]

約数ペア:

[(1, 20399386245), (3, 6799795415), (5, 4079877249), (7, 2914198035), (15, 1359959083), (21, 971399345), (35, 582839607), (49, 416314005), (105, 194279869), (147, 138771335), (245, 83262801), (735, 27754267)]