209319789

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{2663}}^1$

素因数の和:2889

約数の個数: 32

約数和(自身を含む): 337582080

約数和(自身を除く): 128262291

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 399, 591, 1379, 2663, 3743, 4137, 7989, 11229, 18641, 26201, 50597, 55923, 78603, 151791, 354179, 524611, 1062537, 1573833, 3672277, 9967609, 11016831, 29902827, 69773263, 209319789]

約数ペア:

[(1, 209319789), (3, 69773263), (7, 29902827), (19, 11016831), (21, 9967609), (57, 3672277), (133, 1573833), (197, 1062537), (399, 524611), (591, 354179), (1379, 151791), (2663, 78603), (3743, 55923), (4137, 50597), (7989, 26201), (11229, 18641)]