20986315

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5501}}^1$

素因数の和:5622

約数の個数: 16

約数和(自身を含む): 29050560

約数和(自身を除く): 8064245

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 5501, 27505, 38507, 192535, 599609, 2998045, 4197263, 20986315]

約数ペア:

[(1, 20986315), (5, 4197263), (7, 2998045), (35, 599609), (109, 192535), (545, 38507), (763, 27505), (3815, 5501)]