398228480

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:262

約数の個数: 176

約数和(自身を含む): 1067453184

約数和(自身を除く): 669224704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 193, 208, 248, 256, 260, 310, 320, 386, 403, 416, 496, 512, 520, 620, 640, 772, 806, 832, 965, 992, 1024, 1040, 1240, 1280, 1544, 1612, 1664, 1930, 1984, 2015, 2080, 2480, 2509, 2560, 3088, 3224, 3328, 3860, 3968, 4030, 4160, 4960, 5018, 5120, 5983, 6176, 6448, 6656, 7720, 7936, 8060, 8320, 9920, 10036, 11966, 12352, 12545, 12896, 13312, 15440, 15872, 16120, 16640, 19840, 20072, 23932, 24704, 25090, 25792, 29915, 30880, 31744, 32240, 33280, 39680, 40144, 47864, 49408, 50180, 51584, 59830, 61760, 64480, 66560, 77779, 79360, 80288, 95728, 98816, 100360, 103168, 119660, 123520, 128960, 155558, 158720, 160576, 191456, 197632, 200720, 206336, 239320, 247040, 257920, 311116, 321152, 382912, 388895, 401440, 412672, 478640, 494080, 515840, 622232, 642304, 765824, 777790, 802880, 957280, 988160, 1031680, 1244464, 1284608, 1531648, 1555580, 1605760, 1914560, 2063360, 2488928, 2569216, 3063296, 3111160, 3211520, 3829120, 4977856, 6126592, 6222320, 6423040, 7658240, 9955712, 12444640, 12846080, 15316480, 19911424, 24889280, 30632960, 39822848, 49778560, 79645696, 99557120, 199114240, 398228480]

約数ペア:

[(1, 398228480), (2, 199114240), (4, 99557120), (5, 79645696), (8, 49778560), (10, 39822848), (13, 30632960), (16, 24889280), (20, 19911424), (26, 15316480), (31, 12846080), (32, 12444640), (40, 9955712), (52, 7658240), (62, 6423040), (64, 6222320), (65, 6126592), (80, 4977856), (104, 3829120), (124, 3211520), (128, 3111160), (130, 3063296), (155, 2569216), (160, 2488928), (193, 2063360), (208, 1914560), (248, 1605760), (256, 1555580), (260, 1531648), (310, 1284608), (320, 1244464), (386, 1031680), (403, 988160), (416, 957280), (496, 802880), (512, 777790), (520, 765824), (620, 642304), (640, 622232), (772, 515840), (806, 494080), (832, 478640), (965, 412672), (992, 401440), (1024, 388895), (1040, 382912), (1240, 321152), (1280, 311116), (1544, 257920), (1612, 247040), (1664, 239320), (1930, 206336), (1984, 200720), (2015, 197632), (2080, 191456), (2480, 160576), (2509, 158720), (2560, 155558), (3088, 128960), (3224, 123520), (3328, 119660), (3860, 103168), (3968, 100360), (4030, 98816), (4160, 95728), (4960, 80288), (5018, 79360), (5120, 77779), (5983, 66560), (6176, 64480), (6448, 61760), (6656, 59830), (7720, 51584), (7936, 50180), (8060, 49408), (8320, 47864), (9920, 40144), (10036, 39680), (11966, 33280), (12352, 32240), (12545, 31744), (12896, 30880), (13312, 29915), (15440, 25792), (15872, 25090), (16120, 24704), (16640, 23932), (19840, 20072)]