20851411

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 25338096

約数和(自身を除く): 4486685

約数列:

[1, 7, 41, 49, 97, 107, 287, 679, 749, 2009, 3977, 4387, 4753, 5243, 10379, 27839, 30709, 72653, 194873, 214963, 425539, 508571, 2978773, 20851411]

約数ペア:

[(1, 20851411), (7, 2978773), (41, 508571), (49, 425539), (97, 214963), (107, 194873), (287, 72653), (679, 30709), (749, 27839), (2009, 10379), (3977, 5243), (4387, 4753)]