21784912

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13219}}^1$

素因数の和:13330

約数の個数: 20

約数和(自身を含む): 42621280

約数和(自身を除く): 20836368

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13219, 26438, 52876, 105752, 211504, 1361557, 2723114, 5446228, 10892456, 21784912]

約数ペア:

[(1, 21784912), (2, 10892456), (4, 5446228), (8, 2723114), (16, 1361557), (103, 211504), (206, 105752), (412, 52876), (824, 26438), (1648, 13219)]