20996949920

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{683}}^1\times {\mathrm{709}}^1$

素因数の和:1678

約数の個数: 96

約数和(自身を含む): 49931562240

約数和(自身を除く): 28934612320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 542, 683, 709, 1084, 1355, 1366, 1418, 2168, 2710, 2732, 2836, 3415, 3545, 4336, 5420, 5464, 5672, 6830, 7090, 8672, 10840, 10928, 11344, 13660, 14180, 21680, 21856, 22688, 27320, 28360, 43360, 54640, 56720, 109280, 113440, 185093, 192139, 370186, 384278, 484247, 740372, 768556, 925465, 960695, 968494, 1480744, 1537112, 1850930, 1921390, 1936988, 2421235, 2961488, 3074224, 3701860, 3842780, 3873976, 4842470, 5922976, 6148448, 7403720, 7685560, 7747952, 9684940, 14807440, 15371120, 15495904, 19369880, 29614880, 30742240, 38739760, 77479520, 131230937, 262461874, 524923748, 656154685, 1049847496, 1312309370, 2099694992, 2624618740, 4199389984, 5249237480, 10498474960, 20996949920]

約数ペア:

[(1, 20996949920), (2, 10498474960), (4, 5249237480), (5, 4199389984), (8, 2624618740), (10, 2099694992), (16, 1312309370), (20, 1049847496), (32, 656154685), (40, 524923748), (80, 262461874), (160, 131230937), (271, 77479520), (542, 38739760), (683, 30742240), (709, 29614880), (1084, 19369880), (1355, 15495904), (1366, 15371120), (1418, 14807440), (2168, 9684940), (2710, 7747952), (2732, 7685560), (2836, 7403720), (3415, 6148448), (3545, 5922976), (4336, 4842470), (5420, 3873976), (5464, 3842780), (5672, 3701860), (6830, 3074224), (7090, 2961488), (8672, 2421235), (10840, 1936988), (10928, 1921390), (11344, 1850930), (13660, 1537112), (14180, 1480744), (21680, 968494), (21856, 960695), (22688, 925465), (27320, 768556), (28360, 740372), (43360, 484247), (54640, 384278), (56720, 370186), (109280, 192139), (113440, 185093)]