21561297

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{5273}}^1$

素因数の和:5352

約数の個数: 16

約数和(自身を含む): 30378240

約数和(自身を除く): 8816943

約数列:

[1, 3, 29, 47, 87, 141, 1363, 4089, 5273, 15819, 152917, 247831, 458751, 743493, 7187099, 21561297]

約数ペア:

[(1, 21561297), (3, 7187099), (29, 743493), (47, 458751), (87, 247831), (141, 152917), (1363, 15819), (4089, 5273)]