491127

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:287

約数の個数: 24

約数和(自身を含む): 823536

約数和(自身を除く): 332409

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 257, 273, 637, 771, 1799, 1911, 3341, 5397, 10023, 12593, 23387, 37779, 70161, 163709, 491127]

約数ペア:

[(1, 491127), (3, 163709), (7, 70161), (13, 37779), (21, 23387), (39, 12593), (49, 10023), (91, 5397), (147, 3341), (257, 1911), (273, 1799), (637, 771)]