81923840

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2207}}^1$

素因数の和:2257

約数の個数: 72

約数和(自身を含む): 203091840

約数和(自身を除く): 121168000

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, 580, 640, 928, 1160, 1280, 1856, 2207, 2320, 3712, 4414, 4640, 7424, 8828, 9280, 11035, 17656, 18560, 22070, 35312, 37120, 44140, 64003, 70624, 88280, 128006, 141248, 176560, 256012, 282496, 320015, 353120, 512024, 564992, 640030, 706240, 1024048, 1280060, 1412480, 2048096, 2560120, 2824960, 4096192, 5120240, 8192384, 10240480, 16384768, 20480960, 40961920, 81923840]

約数ペア:

[(1, 81923840), (2, 40961920), (4, 20480960), (5, 16384768), (8, 10240480), (10, 8192384), (16, 5120240), (20, 4096192), (29, 2824960), (32, 2560120), (40, 2048096), (58, 1412480), (64, 1280060), (80, 1024048), (116, 706240), (128, 640030), (145, 564992), (160, 512024), (232, 353120), (256, 320015), (290, 282496), (320, 256012), (464, 176560), (580, 141248), (640, 128006), (928, 88280), (1160, 70624), (1280, 64003), (1856, 44140), (2207, 37120), (2320, 35312), (3712, 22070), (4414, 18560), (4640, 17656), (7424, 11035), (8828, 9280)]