1640691

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 2628080

約数和(自身を除く): 987389

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 379, 481, 1137, 1443, 3411, 4329, 4927, 14023, 14781, 42069, 44343, 126207, 182299, 546897, 1640691]

約数ペア:

[(1, 1640691), (3, 546897), (9, 182299), (13, 126207), (37, 44343), (39, 42069), (111, 14781), (117, 14023), (333, 4927), (379, 4329), (481, 3411), (1137, 1443)]