21208366779

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{1087}}^1\times {\mathrm{382567}}^1$

素因数の和:383674

約数の個数: 16

約数和(自身を含む): 29968846848

約数和(自身を除く): 8760480069

約数列:

[1, 3, 17, 51, 1087, 3261, 18479, 55437, 382567, 1147701, 6503639, 19510917, 415850329, 1247550987, 7069455593, 21208366779]

約数ペア:

[(1, 21208366779), (3, 7069455593), (17, 1247550987), (51, 415850329), (1087, 19510917), (3261, 6503639), (18479, 1147701), (55437, 382567)]