20990784

素因数分解:

$2^6\times 3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:200

約数の個数: 112

約数和(自身を含む): 60350400

約数和(自身を除く): 39359616

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 32, 34, 48, 51, 59, 64, 68, 96, 102, 109, 118, 136, 177, 192, 204, 218, 236, 272, 327, 354, 408, 436, 472, 544, 654, 708, 816, 872, 944, 1003, 1088, 1308, 1416, 1632, 1744, 1853, 1888, 2006, 2616, 2832, 3009, 3264, 3488, 3706, 3776, 4012, 5232, 5559, 5664, 6018, 6431, 6976, 7412, 8024, 10464, 11118, 11328, 12036, 12862, 14824, 16048, 19293, 20928, 22236, 24072, 25724, 29648, 32096, 38586, 44472, 48144, 51448, 59296, 64192, 77172, 88944, 96288, 102896, 109327, 118592, 154344, 177888, 192576, 205792, 218654, 308688, 327981, 355776, 411584, 437308, 617376, 655962, 874616, 1234752, 1311924, 1749232, 2623848, 3498464, 5247696, 6996928, 10495392, 20990784]

約数ペア:

[(1, 20990784), (2, 10495392), (3, 6996928), (4, 5247696), (6, 3498464), (8, 2623848), (12, 1749232), (16, 1311924), (17, 1234752), (24, 874616), (32, 655962), (34, 617376), (48, 437308), (51, 411584), (59, 355776), (64, 327981), (68, 308688), (96, 218654), (102, 205792), (109, 192576), (118, 177888), (136, 154344), (177, 118592), (192, 109327), (204, 102896), (218, 96288), (236, 88944), (272, 77172), (327, 64192), (354, 59296), (408, 51448), (436, 48144), (472, 44472), (544, 38586), (654, 32096), (708, 29648), (816, 25724), (872, 24072), (944, 22236), (1003, 20928), (1088, 19293), (1308, 16048), (1416, 14824), (1632, 12862), (1744, 12036), (1853, 11328), (1888, 11118), (2006, 10464), (2616, 8024), (2832, 7412), (3009, 6976), (3264, 6431), (3488, 6018), (3706, 5664), (3776, 5559), (4012, 5232)]