20809479

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{6689}}^1$

素因数の和:6770

約数の個数: 16

約数和(自身を含む): 29864160

約数和(自身を除く): 9054681

約数列:

[1, 3, 17, 51, 61, 183, 1037, 3111, 6689, 20067, 113713, 341139, 408029, 1224087, 6936493, 20809479]

約数ペア:

[(1, 20809479), (3, 6936493), (17, 1224087), (51, 408029), (61, 341139), (183, 113713), (1037, 20067), (3111, 6689)]