81358816

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:177

約数の個数: 144

約数和(自身を含む): 209427120

約数和(自身を除く): 128068304

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 53, 56, 77, 88, 89, 98, 106, 112, 154, 176, 178, 196, 212, 224, 308, 352, 356, 371, 392, 424, 539, 583, 616, 623, 712, 742, 784, 848, 979, 1078, 1166, 1232, 1246, 1424, 1484, 1568, 1696, 1958, 2156, 2332, 2464, 2492, 2597, 2848, 2968, 3916, 4081, 4312, 4361, 4664, 4717, 4984, 5194, 5936, 6853, 7832, 8162, 8624, 8722, 9328, 9434, 9968, 10388, 11872, 13706, 15664, 16324, 17248, 17444, 18656, 18868, 19936, 20776, 27412, 28567, 31328, 32648, 33019, 34888, 37736, 41552, 47971, 51887, 54824, 57134, 65296, 66038, 69776, 75472, 83104, 95942, 103774, 109648, 114268, 130592, 132076, 139552, 150944, 191884, 207548, 219296, 228536, 231133, 264152, 363209, 383768, 415096, 457072, 462266, 528304, 726418, 767536, 830192, 914144, 924532, 1056608, 1452836, 1535072, 1660384, 1849064, 2542463, 2905672, 3698128, 5084926, 5811344, 7396256, 10169852, 11622688, 20339704, 40679408, 81358816]

約数ペア:

[(1, 81358816), (2, 40679408), (4, 20339704), (7, 11622688), (8, 10169852), (11, 7396256), (14, 5811344), (16, 5084926), (22, 3698128), (28, 2905672), (32, 2542463), (44, 1849064), (49, 1660384), (53, 1535072), (56, 1452836), (77, 1056608), (88, 924532), (89, 914144), (98, 830192), (106, 767536), (112, 726418), (154, 528304), (176, 462266), (178, 457072), (196, 415096), (212, 383768), (224, 363209), (308, 264152), (352, 231133), (356, 228536), (371, 219296), (392, 207548), (424, 191884), (539, 150944), (583, 139552), (616, 132076), (623, 130592), (712, 114268), (742, 109648), (784, 103774), (848, 95942), (979, 83104), (1078, 75472), (1166, 69776), (1232, 66038), (1246, 65296), (1424, 57134), (1484, 54824), (1568, 51887), (1696, 47971), (1958, 41552), (2156, 37736), (2332, 34888), (2464, 33019), (2492, 32648), (2597, 31328), (2848, 28567), (2968, 27412), (3916, 20776), (4081, 19936), (4312, 18868), (4361, 18656), (4664, 17444), (4717, 17248), (4984, 16324), (5194, 15664), (5936, 13706), (6853, 11872), (7832, 10388), (8162, 9968), (8624, 9434), (8722, 9328)]