20718155

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3433}}^1$

素因数の和:3526

約数の個数: 16

約数和(自身を含む): 26702784

約数和(自身を除く): 5984629

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3433, 6035, 17165, 58361, 243743, 291805, 1218715, 4143631, 20718155]

約数ペア:

[(1, 20718155), (5, 4143631), (17, 1218715), (71, 291805), (85, 243743), (355, 58361), (1207, 17165), (3433, 6035)]