81998080

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^2$

素因数の和:144

約数の個数: 108

約数和(自身を含む): 207598860

約数和(自身を除く): 125600780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 47, 58, 64, 80, 94, 116, 128, 145, 160, 188, 232, 235, 256, 290, 320, 376, 464, 470, 580, 640, 752, 928, 940, 1160, 1280, 1363, 1504, 1856, 1880, 2209, 2320, 2726, 3008, 3712, 3760, 4418, 4640, 5452, 6016, 6815, 7424, 7520, 8836, 9280, 10904, 11045, 12032, 13630, 15040, 17672, 18560, 21808, 22090, 27260, 30080, 35344, 37120, 43616, 44180, 54520, 60160, 64061, 70688, 87232, 88360, 109040, 128122, 141376, 174464, 176720, 218080, 256244, 282752, 320305, 348928, 353440, 436160, 512488, 565504, 640610, 706880, 872320, 1024976, 1281220, 1413760, 1744640, 2049952, 2562440, 2827520, 4099904, 5124880, 8199808, 10249760, 16399616, 20499520, 40999040, 81998080]

約数ペア:

[(1, 81998080), (2, 40999040), (4, 20499520), (5, 16399616), (8, 10249760), (10, 8199808), (16, 5124880), (20, 4099904), (29, 2827520), (32, 2562440), (40, 2049952), (47, 1744640), (58, 1413760), (64, 1281220), (80, 1024976), (94, 872320), (116, 706880), (128, 640610), (145, 565504), (160, 512488), (188, 436160), (232, 353440), (235, 348928), (256, 320305), (290, 282752), (320, 256244), (376, 218080), (464, 176720), (470, 174464), (580, 141376), (640, 128122), (752, 109040), (928, 88360), (940, 87232), (1160, 70688), (1280, 64061), (1363, 60160), (1504, 54520), (1856, 44180), (1880, 43616), (2209, 37120), (2320, 35344), (2726, 30080), (3008, 27260), (3712, 22090), (3760, 21808), (4418, 18560), (4640, 17672), (5452, 15040), (6016, 13630), (6815, 12032), (7424, 11045), (7520, 10904), (8836, 9280)]