20349399

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51001}}^1$

素因数の和:51030

約数の個数: 16

約数和(自身を含む): 32641280

約数和(自身を除く): 12291881

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51001, 153003, 357007, 969019, 1071021, 2907057, 6783133, 20349399]

約数ペア:

[(1, 20349399), (3, 6783133), (7, 2907057), (19, 1071021), (21, 969019), (57, 357007), (133, 153003), (399, 51001)]