21040107

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{727}}^1\times {\mathrm{877}}^1$

素因数の和:1618

約数の個数: 16

約数和(自身を含む): 30680832

約数和(自身を除く): 9640725

約数列:

[1, 3, 11, 33, 727, 877, 2181, 2631, 7997, 9647, 23991, 28941, 637579, 1912737, 7013369, 21040107]

約数ペア:

[(1, 21040107), (3, 7013369), (11, 1912737), (33, 637579), (727, 28941), (877, 23991), (2181, 9647), (2631, 7997)]