21493432

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20509}}^1$

素因数の和:20646

約数の個数: 16

約数和(自身を含む): 40609800

約数和(自身を除く): 19116368

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20509, 41018, 82036, 164072, 2686679, 5373358, 10746716, 21493432]

約数ペア:

[(1, 21493432), (2, 10746716), (4, 5373358), (8, 2686679), (131, 164072), (262, 82036), (524, 41018), (1048, 20509)]