21928419

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{433}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 33716592

約数和(自身を除く): 11788173

約数列:

[1, 3, 9, 17, 51, 153, 331, 433, 993, 1299, 2979, 3897, 5627, 7361, 16881, 22083, 50643, 66249, 143323, 429969, 1289907, 2436491, 7309473, 21928419]

約数ペア:

[(1, 21928419), (3, 7309473), (9, 2436491), (17, 1289907), (51, 429969), (153, 143323), (331, 66249), (433, 50643), (993, 22083), (1299, 16881), (2979, 7361), (3897, 5627)]