21480753

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9931}}^1$

素因数の和:10044

約数の個数: 16

約数和(自身を含む): 33053696

約数和(自身を除く): 11572943

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9931, 29793, 69517, 208551, 1022893, 3068679, 7160251, 21480753]

約数ペア:

[(1, 21480753), (3, 7160251), (7, 3068679), (21, 1022893), (103, 208551), (309, 69517), (721, 29793), (2163, 9931)]