21642379

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:818

約数の個数: 16

約数和(自身を含む): 24862464

約数和(自身を除く): 3220085

約数列:

[1, 11, 23, 131, 253, 653, 1441, 3013, 7183, 15019, 33143, 85543, 165209, 940973, 1967489, 21642379]

約数ペア:

[(1, 21642379), (11, 1967489), (23, 940973), (131, 165209), (253, 85543), (653, 33143), (1441, 15019), (3013, 7183)]