21289858

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{3533}}^1$

素因数の和:3689

約数の個数: 16

約数和(自身を含む): 33587136

約数和(自身を除く): 12297278

約数列:

[1, 2, 23, 46, 131, 262, 3013, 3533, 6026, 7066, 81259, 162518, 462823, 925646, 10644929, 21289858]

約数ペア:

[(1, 21289858), (2, 10644929), (23, 925646), (46, 462823), (131, 162518), (262, 81259), (3013, 7066), (3533, 6026)]