21085505

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5527}}^1$

素因数の和:5648

約数の個数: 16

約数和(自身を含む): 29187840

約数和(自身を除く): 8102335

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 5527, 27635, 38689, 193445, 602443, 3012215, 4217101, 21085505]

約数ペア:

[(1, 21085505), (5, 4217101), (7, 3012215), (35, 602443), (109, 193445), (545, 38689), (763, 27635), (3815, 5527)]