20916385

素因数分解:

$5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1447}}^1$

素因数の和:1525

約数の個数: 24

約数和(自身を含む): 29712960

約数和(自身を除く): 8796575

約数列:

[1, 5, 7, 35, 49, 59, 245, 295, 413, 1447, 2065, 2891, 7235, 10129, 14455, 50645, 70903, 85373, 354515, 426865, 597611, 2988055, 4183277, 20916385]

約数ペア:

[(1, 20916385), (5, 4183277), (7, 2988055), (35, 597611), (49, 426865), (59, 354515), (245, 85373), (295, 70903), (413, 50645), (1447, 14455), (2065, 10129), (2891, 7235)]