81699840

素因数分解:

$2^{10}\times 3^4\times 5^1\times {\mathrm{197}}^1$

素因数の和:234

約数の個数: 220

約数和(自身を含む): 294252156

約数和(自身を除く): 212552316

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 197, 216, 240, 256, 270, 288, 320, 324, 360, 384, 394, 405, 432, 480, 512, 540, 576, 591, 640, 648, 720, 768, 788, 810, 864, 960, 985, 1024, 1080, 1152, 1182, 1280, 1296, 1440, 1536, 1576, 1620, 1728, 1773, 1920, 1970, 2160, 2304, 2364, 2560, 2592, 2880, 2955, 3072, 3152, 3240, 3456, 3546, 3840, 3940, 4320, 4608, 4728, 5120, 5184, 5319, 5760, 5910, 6304, 6480, 6912, 7092, 7680, 7880, 8640, 8865, 9216, 9456, 10368, 10638, 11520, 11820, 12608, 12960, 13824, 14184, 15360, 15760, 15957, 17280, 17730, 18912, 20736, 21276, 23040, 23640, 25216, 25920, 26595, 27648, 28368, 31520, 31914, 34560, 35460, 37824, 41472, 42552, 46080, 47280, 50432, 51840, 53190, 56736, 63040, 63828, 69120, 70920, 75648, 79785, 82944, 85104, 94560, 100864, 103680, 106380, 113472, 126080, 127656, 138240, 141840, 151296, 159570, 170208, 189120, 201728, 207360, 212760, 226944, 252160, 255312, 283680, 302592, 319140, 340416, 378240, 414720, 425520, 453888, 504320, 510624, 567360, 605184, 638280, 680832, 756480, 851040, 907776, 1008640, 1021248, 1134720, 1276560, 1361664, 1512960, 1702080, 1815552, 2042496, 2269440, 2553120, 2723328, 3025920, 3404160, 4084992, 4538880, 5106240, 5446656, 6808320, 8169984, 9077760, 10212480, 13616640, 16339968, 20424960, 27233280, 40849920, 81699840]

約数ペア:

[(1, 81699840), (2, 40849920), (3, 27233280), (4, 20424960), (5, 16339968), (6, 13616640), (8, 10212480), (9, 9077760), (10, 8169984), (12, 6808320), (15, 5446656), (16, 5106240), (18, 4538880), (20, 4084992), (24, 3404160), (27, 3025920), (30, 2723328), (32, 2553120), (36, 2269440), (40, 2042496), (45, 1815552), (48, 1702080), (54, 1512960), (60, 1361664), (64, 1276560), (72, 1134720), (80, 1021248), (81, 1008640), (90, 907776), (96, 851040), (108, 756480), (120, 680832), (128, 638280), (135, 605184), (144, 567360), (160, 510624), (162, 504320), (180, 453888), (192, 425520), (197, 414720), (216, 378240), (240, 340416), (256, 319140), (270, 302592), (288, 283680), (320, 255312), (324, 252160), (360, 226944), (384, 212760), (394, 207360), (405, 201728), (432, 189120), (480, 170208), (512, 159570), (540, 151296), (576, 141840), (591, 138240), (640, 127656), (648, 126080), (720, 113472), (768, 106380), (788, 103680), (810, 100864), (864, 94560), (960, 85104), (985, 82944), (1024, 79785), (1080, 75648), (1152, 70920), (1182, 69120), (1280, 63828), (1296, 63040), (1440, 56736), (1536, 53190), (1576, 51840), (1620, 50432), (1728, 47280), (1773, 46080), (1920, 42552), (1970, 41472), (2160, 37824), (2304, 35460), (2364, 34560), (2560, 31914), (2592, 31520), (2880, 28368), (2955, 27648), (3072, 26595), (3152, 25920), (3240, 25216), (3456, 23640), (3546, 23040), (3840, 21276), (3940, 20736), (4320, 18912), (4608, 17730), (4728, 17280), (5120, 15957), (5184, 15760), (5319, 15360), (5760, 14184), (5910, 13824), (6304, 12960), (6480, 12608), (6912, 11820), (7092, 11520), (7680, 10638), (7880, 10368), (8640, 9456), (8865, 9216)]