21144891

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{907}}^1$

素因数の和:1338

約数の個数: 16

約数和(自身を含む): 29782400

約数和(自身を除く): 8637509

約数列:

[1, 3, 19, 57, 409, 907, 1227, 2721, 7771, 17233, 23313, 51699, 370963, 1112889, 7048297, 21144891]

約数ペア:

[(1, 21144891), (3, 7048297), (19, 1112889), (57, 370963), (409, 51699), (907, 23313), (1227, 17233), (2721, 7771)]