16711821

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 29286400

約数和(自身を除く): 12574579

約数列:

[1, 3, 7, 9, 21, 31, 43, 63, 93, 129, 199, 217, 279, 301, 387, 597, 651, 903, 1333, 1393, 1791, 1953, 2709, 3999, 4179, 6169, 8557, 9331, 11997, 12537, 18507, 25671, 27993, 43183, 55521, 59899, 77013, 83979, 129549, 179697, 265267, 388647, 539091, 795801, 1856869, 2387403, 5570607, 16711821]

約数ペア:

[(1, 16711821), (3, 5570607), (7, 2387403), (9, 1856869), (21, 795801), (31, 539091), (43, 388647), (63, 265267), (93, 179697), (129, 129549), (199, 83979), (217, 77013), (279, 59899), (301, 55521), (387, 43183), (597, 27993), (651, 25671), (903, 18507), (1333, 12537), (1393, 11997), (1791, 9331), (1953, 8557), (2709, 6169), (3999, 4179)]