18685440

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{811}}^1$

素因数の和:840

約数の個数: 120

約数和(自身を含む): 64792728

約数和(自身を除く): 46107288

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 811, 960, 1152, 1280, 1440, 1536, 1622, 1920, 2304, 2433, 2560, 2880, 3244, 3840, 4055, 4608, 4866, 5760, 6488, 7299, 7680, 8110, 9732, 11520, 12165, 12976, 14598, 16220, 19464, 23040, 24330, 25952, 29196, 32440, 36495, 38928, 48660, 51904, 58392, 64880, 72990, 77856, 97320, 103808, 116784, 129760, 145980, 155712, 194640, 207616, 233568, 259520, 291960, 311424, 389280, 415232, 467136, 519040, 583920, 622848, 778560, 934272, 1038080, 1167840, 1245696, 1557120, 1868544, 2076160, 2335680, 3114240, 3737088, 4671360, 6228480, 9342720, 18685440]

約数ペア:

[(1, 18685440), (2, 9342720), (3, 6228480), (4, 4671360), (5, 3737088), (6, 3114240), (8, 2335680), (9, 2076160), (10, 1868544), (12, 1557120), (15, 1245696), (16, 1167840), (18, 1038080), (20, 934272), (24, 778560), (30, 622848), (32, 583920), (36, 519040), (40, 467136), (45, 415232), (48, 389280), (60, 311424), (64, 291960), (72, 259520), (80, 233568), (90, 207616), (96, 194640), (120, 155712), (128, 145980), (144, 129760), (160, 116784), (180, 103808), (192, 97320), (240, 77856), (256, 72990), (288, 64880), (320, 58392), (360, 51904), (384, 48660), (480, 38928), (512, 36495), (576, 32440), (640, 29196), (720, 25952), (768, 24330), (811, 23040), (960, 19464), (1152, 16220), (1280, 14598), (1440, 12976), (1536, 12165), (1622, 11520), (1920, 9732), (2304, 8110), (2433, 7680), (2560, 7299), (2880, 6488), (3244, 5760), (3840, 4866), (4055, 4608)]