20787208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199877}}^1$

素因数の和:199896

約数の個数: 16

約数和(自身を含む): 41974380

約数和(自身を除く): 21187172

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199877, 399754, 799508, 1599016, 2598401, 5196802, 10393604, 20787208]

約数ペア:

[(1, 20787208), (2, 10393604), (4, 5196802), (8, 2598401), (13, 1599016), (26, 799508), (52, 399754), (104, 199877)]