491620221

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{39901}}^1$

素因数の和:39981

約数の個数: 18

約数和(自身を含む): 729847482

約数和(自身を除く): 238227261

約数列:

[1, 3, 9, 37, 111, 333, 1369, 4107, 12321, 39901, 119703, 359109, 1476337, 4429011, 13287033, 54624469, 163873407, 491620221]

約数ペア:

[(1, 491620221), (3, 163873407), (9, 54624469), (37, 13287033), (111, 4429011), (333, 1476337), (1369, 359109), (4107, 119703), (12321, 39901)]