21149799

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1567}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 30858240

約数和(自身を除く): 9708441

約数列:

[1, 3, 11, 33, 409, 1227, 1567, 4499, 4701, 13497, 17237, 51711, 640903, 1922709, 7049933, 21149799]

約数ペア:

[(1, 21149799), (3, 7049933), (11, 1922709), (33, 640903), (409, 51711), (1227, 17237), (1567, 13497), (4499, 4701)]