20780943

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1\times {\mathrm{509}}^1$

素因数の和:982

約数の個数: 16

約数和(自身を含む): 28723200

約数和(自身を除く): 7942257

約数列:

[1, 3, 31, 93, 439, 509, 1317, 1527, 13609, 15779, 40827, 47337, 223451, 670353, 6926981, 20780943]

約数ペア:

[(1, 20780943), (3, 6926981), (31, 670353), (93, 223451), (439, 47337), (509, 40827), (1317, 15779), (1527, 13609)]