21320517

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1601}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 29835648

約数和(自身を除く): 8515131

約数列:

[1, 3, 23, 69, 193, 579, 1601, 4439, 4803, 13317, 36823, 110469, 308993, 926979, 7106839, 21320517]

約数ペア:

[(1, 21320517), (3, 7106839), (23, 926979), (69, 308993), (193, 110469), (579, 36823), (1601, 13317), (4439, 4803)]