21000751209

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{8737}}^1\times {\mathrm{6211}}^1$

素因数の和:14997

約数の個数: 24

約数和(自身を含む): 31048420832

約数和(自身を除く): 10047669623

約数列:

[1, 3, 9, 43, 129, 387, 6211, 8737, 18633, 26211, 55899, 78633, 267073, 375691, 801219, 1127073, 2403657, 3381219, 54265507, 162796521, 488389563, 2333416801, 7000250403, 21000751209]

約数ペア:

[(1, 21000751209), (3, 7000250403), (9, 2333416801), (43, 488389563), (129, 162796521), (387, 54265507), (6211, 3381219), (8737, 2403657), (18633, 1127073), (26211, 801219), (55899, 375691), (78633, 267073)]