20721075555

素因数分解:

$3^1\times 5^1\times {\mathrm{35447}}^1\times {\mathrm{38971}}^1$

素因数の和:74426

約数の個数: 16

約数和(自身を含む): 33155506944

約数和(自身を除く): 12434431389

約数列:

[1, 3, 5, 15, 35447, 38971, 106341, 116913, 177235, 194855, 531705, 584565, 1381405037, 4144215111, 6907025185, 20721075555]

約数ペア:

[(1, 20721075555), (3, 6907025185), (5, 4144215111), (15, 1381405037), (35447, 584565), (38971, 531705), (106341, 194855), (116913, 177235)]