20742155

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5437}}^1$

素因数の和:5558

約数の個数: 16

約数和(自身を含む): 28712640

約数和(自身を除く): 7970485

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 5437, 27185, 38059, 190295, 592633, 2963165, 4148431, 20742155]

約数ペア:

[(1, 20742155), (5, 4148431), (7, 2963165), (35, 592633), (109, 190295), (545, 38059), (763, 27185), (3815, 5437)]