18640728

素因数分解:

$2^3\times 3^2\times {\mathrm{199}}^1\times {\mathrm{1301}}^1$

素因数の和:1512

約数の個数: 48

約数和(自身を含む): 50778000

約数和(自身を除く): 32137272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 199, 398, 597, 796, 1194, 1301, 1592, 1791, 2388, 2602, 3582, 3903, 4776, 5204, 7164, 7806, 10408, 11709, 14328, 15612, 23418, 31224, 46836, 93672, 258899, 517798, 776697, 1035596, 1553394, 2071192, 2330091, 3106788, 4660182, 6213576, 9320364, 18640728]

約数ペア:

[(1, 18640728), (2, 9320364), (3, 6213576), (4, 4660182), (6, 3106788), (8, 2330091), (9, 2071192), (12, 1553394), (18, 1035596), (24, 776697), (36, 517798), (72, 258899), (199, 93672), (398, 46836), (597, 31224), (796, 23418), (1194, 15612), (1301, 14328), (1592, 11709), (1791, 10408), (2388, 7806), (2602, 7164), (3582, 5204), (3903, 4776)]