13408479

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{643}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 22236032

約数和(自身を除く): 8827553

約数列:

[1, 3, 7, 9, 21, 63, 331, 643, 993, 1929, 2317, 2979, 4501, 5787, 6951, 13503, 20853, 40509, 212833, 638499, 1489831, 1915497, 4469493, 13408479]

約数ペア:

[(1, 13408479), (3, 4469493), (7, 1915497), (9, 1489831), (21, 638499), (63, 212833), (331, 40509), (643, 20853), (993, 13503), (1929, 6951), (2317, 5787), (2979, 4501)]