21342681

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{6569}}^1$

素因数の和:6613

約数の個数: 18

約数和(自身を含む): 32541210

約数和(自身を除く): 11198529

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 6569, 19707, 59121, 124811, 374433, 1123299, 2371409, 7114227, 21342681]

約数ペア:

[(1, 21342681), (3, 7114227), (9, 2371409), (19, 1123299), (57, 374433), (171, 124811), (361, 59121), (1083, 19707), (3249, 6569)]