18522880

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 45990000

約数和(自身を除く): 27467120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 499, 580, 640, 928, 998, 1160, 1280, 1856, 1996, 2320, 2495, 3712, 3992, 4640, 4990, 7424, 7984, 9280, 9980, 14471, 15968, 18560, 19960, 28942, 31936, 37120, 39920, 57884, 63872, 72355, 79840, 115768, 127744, 144710, 159680, 231536, 289420, 319360, 463072, 578840, 638720, 926144, 1157680, 1852288, 2315360, 3704576, 4630720, 9261440, 18522880]

約数ペア:

[(1, 18522880), (2, 9261440), (4, 4630720), (5, 3704576), (8, 2315360), (10, 1852288), (16, 1157680), (20, 926144), (29, 638720), (32, 578840), (40, 463072), (58, 319360), (64, 289420), (80, 231536), (116, 159680), (128, 144710), (145, 127744), (160, 115768), (232, 79840), (256, 72355), (290, 63872), (320, 57884), (464, 39920), (499, 37120), (580, 31936), (640, 28942), (928, 19960), (998, 18560), (1160, 15968), (1280, 14471), (1856, 9980), (1996, 9280), (2320, 7984), (2495, 7424), (3712, 4990), (3992, 4640)]