21006609

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28349}}^1$

素因数の和:28384

約数の個数: 16

約数和(自身を含む): 31752000

約数和(自身を除く): 10745391

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28349, 85047, 368537, 538631, 1105611, 1615893, 7002203, 21006609]

約数ペア:

[(1, 21006609), (3, 7002203), (13, 1615893), (19, 1105611), (39, 538631), (57, 368537), (247, 85047), (741, 28349)]