21609609

素因数分解:

$3^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{5171}}^1$

素因数の和:5380

約数の個数: 16

約数和(自身を含む): 33100800

約数和(自身を除く): 11491191

約数列:

[1, 3, 7, 21, 199, 597, 1393, 4179, 5171, 15513, 36197, 108591, 1029029, 3087087, 7203203, 21609609]

約数ペア:

[(1, 21609609), (3, 7203203), (7, 3087087), (21, 1029029), (199, 108591), (597, 36197), (1393, 15513), (4179, 5171)]