19981192

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 47232000

約数和(自身を除く): 27250808

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 163, 199, 308, 326, 398, 616, 652, 796, 1141, 1304, 1393, 1592, 1793, 2189, 2282, 2786, 3586, 4378, 4564, 5572, 7172, 8756, 9128, 11144, 12551, 14344, 15323, 17512, 25102, 30646, 32437, 50204, 61292, 64874, 100408, 122584, 129748, 227059, 259496, 356807, 454118, 713614, 908236, 1427228, 1816472, 2497649, 2854456, 4995298, 9990596, 19981192]

約数ペア:

[(1, 19981192), (2, 9990596), (4, 4995298), (7, 2854456), (8, 2497649), (11, 1816472), (14, 1427228), (22, 908236), (28, 713614), (44, 454118), (56, 356807), (77, 259496), (88, 227059), (154, 129748), (163, 122584), (199, 100408), (308, 64874), (326, 61292), (398, 50204), (616, 32437), (652, 30646), (796, 25102), (1141, 17512), (1304, 15323), (1393, 14344), (1592, 12551), (1793, 11144), (2189, 9128), (2282, 8756), (2786, 7172), (3586, 5572), (4378, 4564)]