21001323

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43481}}^1$

素因数の和:43514

約数の個数: 16

約数和(自身を含む): 33394176

約数和(自身を除く): 12392853

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43481, 130443, 304367, 913101, 1000063, 3000189, 7000441, 21001323]

約数ペア:

[(1, 21001323), (3, 7000441), (7, 3000189), (21, 1000063), (23, 913101), (69, 304367), (161, 130443), (483, 43481)]