20664195

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19403}}^1$

素因数の和:19482

約数の個数: 16

約数和(自身を含む): 33530112

約数和(自身を除く): 12865917

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19403, 58209, 97015, 291045, 1377613, 4132839, 6888065, 20664195]

約数ペア:

[(1, 20664195), (3, 6888065), (5, 4132839), (15, 1377613), (71, 291045), (213, 97015), (355, 58209), (1065, 19403)]