16887213

素因数分解:

$3^2\times 7^2\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:426

約数の個数: 36

約数和(自身を含む): 28676700

約数和(自身を除く): 11789487

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 149, 257, 441, 447, 771, 1043, 1341, 1799, 2313, 3129, 5397, 7301, 9387, 12593, 16191, 21903, 37779, 38293, 65709, 113337, 114879, 268051, 344637, 804153, 1876357, 2412459, 5629071, 16887213]

約数ペア:

[(1, 16887213), (3, 5629071), (7, 2412459), (9, 1876357), (21, 804153), (49, 344637), (63, 268051), (147, 114879), (149, 113337), (257, 65709), (441, 38293), (447, 37779), (771, 21903), (1043, 16191), (1341, 12593), (1799, 9387), (2313, 7301), (3129, 5397)]