20998080

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{317}}^1$

素因数の和:363

約数の個数: 168

約数和(自身を含む): 75602592

約数和(自身を除く): 54604512

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 64, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 192, 207, 230, 240, 276, 288, 317, 320, 345, 360, 368, 414, 460, 480, 552, 576, 634, 690, 720, 736, 828, 920, 951, 960, 1035, 1104, 1268, 1380, 1440, 1472, 1585, 1656, 1840, 1902, 2070, 2208, 2536, 2760, 2853, 2880, 3170, 3312, 3680, 3804, 4140, 4416, 4755, 5072, 5520, 5706, 6340, 6624, 7291, 7360, 7608, 8280, 9510, 10144, 11040, 11412, 12680, 13248, 14265, 14582, 15216, 16560, 19020, 20288, 21873, 22080, 22824, 25360, 28530, 29164, 30432, 33120, 36455, 38040, 43746, 45648, 50720, 57060, 58328, 60864, 65619, 66240, 72910, 76080, 87492, 91296, 101440, 109365, 114120, 116656, 131238, 145820, 152160, 174984, 182592, 218730, 228240, 233312, 262476, 291640, 304320, 328095, 349968, 437460, 456480, 466624, 524952, 583280, 656190, 699936, 874920, 912960, 1049904, 1166560, 1312380, 1399872, 1749840, 2099808, 2333120, 2624760, 3499680, 4199616, 5249520, 6999360, 10499040, 20998080]

約数ペア:

[(1, 20998080), (2, 10499040), (3, 6999360), (4, 5249520), (5, 4199616), (6, 3499680), (8, 2624760), (9, 2333120), (10, 2099808), (12, 1749840), (15, 1399872), (16, 1312380), (18, 1166560), (20, 1049904), (23, 912960), (24, 874920), (30, 699936), (32, 656190), (36, 583280), (40, 524952), (45, 466624), (46, 456480), (48, 437460), (60, 349968), (64, 328095), (69, 304320), (72, 291640), (80, 262476), (90, 233312), (92, 228240), (96, 218730), (115, 182592), (120, 174984), (138, 152160), (144, 145820), (160, 131238), (180, 116656), (184, 114120), (192, 109365), (207, 101440), (230, 91296), (240, 87492), (276, 76080), (288, 72910), (317, 66240), (320, 65619), (345, 60864), (360, 58328), (368, 57060), (414, 50720), (460, 45648), (480, 43746), (552, 38040), (576, 36455), (634, 33120), (690, 30432), (720, 29164), (736, 28530), (828, 25360), (920, 22824), (951, 22080), (960, 21873), (1035, 20288), (1104, 19020), (1268, 16560), (1380, 15216), (1440, 14582), (1472, 14265), (1585, 13248), (1656, 12680), (1840, 11412), (1902, 11040), (2070, 10144), (2208, 9510), (2536, 8280), (2760, 7608), (2853, 7360), (2880, 7291), (3170, 6624), (3312, 6340), (3680, 5706), (3804, 5520), (4140, 5072), (4416, 4755)]