671985

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 1184040

約数和(自身を除く): 512055

約数列:

[1, 3, 5, 9, 15, 45, 109, 137, 327, 411, 545, 685, 981, 1233, 1635, 2055, 4905, 6165, 14933, 44799, 74665, 134397, 223995, 671985]

約数ペア:

[(1, 671985), (3, 223995), (5, 134397), (9, 74665), (15, 44799), (45, 14933), (109, 6165), (137, 4905), (327, 2055), (411, 1635), (545, 1233), (685, 981)]