18966805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 8466923

約数列:

[1, 5, 11, 13, 41, 55, 65, 143, 205, 451, 533, 647, 715, 2255, 2665, 3235, 5863, 7117, 8411, 26527, 29315, 35585, 42055, 92521, 132635, 291797, 344851, 462605, 1458985, 1724255, 3793361, 18966805]

約数ペア:

[(1, 18966805), (5, 3793361), (11, 1724255), (13, 1458985), (41, 462605), (55, 344851), (65, 291797), (143, 132635), (205, 92521), (451, 42055), (533, 35585), (647, 29315), (715, 26527), (2255, 8411), (2665, 7117), (3235, 5863)]