21087887949

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{977513}}^1$

素因数の和:977586

約数の個数: 32

約数和(自身を含む): 33782883840

約数和(自身を除く): 12694995891

約数列:

[1, 3, 9, 17, 27, 47, 51, 141, 153, 423, 459, 799, 1269, 2397, 7191, 21573, 977513, 2932539, 8797617, 16617721, 26392851, 45943111, 49853163, 137829333, 149559489, 413487999, 448678467, 781032887, 1240463997, 2343098661, 7029295983, 21087887949]

約数ペア:

[(1, 21087887949), (3, 7029295983), (9, 2343098661), (17, 1240463997), (27, 781032887), (47, 448678467), (51, 413487999), (141, 149559489), (153, 137829333), (423, 49853163), (459, 45943111), (799, 26392851), (1269, 16617721), (2397, 8797617), (7191, 2932539), (21573, 977513)]