321996640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:709

約数の個数: 144

約数和(自身を含む): 899588592

約数和(自身を除く): 577591952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 67, 70, 80, 98, 112, 134, 140, 160, 196, 224, 245, 268, 280, 335, 392, 469, 490, 536, 560, 613, 670, 784, 938, 980, 1072, 1120, 1226, 1340, 1568, 1876, 1960, 2144, 2345, 2452, 2680, 3065, 3283, 3752, 3920, 4291, 4690, 4904, 5360, 6130, 6566, 7504, 7840, 8582, 9380, 9808, 10720, 12260, 13132, 15008, 16415, 17164, 18760, 19616, 21455, 24520, 26264, 30037, 32830, 34328, 37520, 41071, 42910, 49040, 52528, 60074, 65660, 68656, 75040, 82142, 85820, 98080, 105056, 120148, 131320, 137312, 150185, 164284, 171640, 205355, 240296, 262640, 287497, 300370, 328568, 343280, 410710, 480592, 525280, 574994, 600740, 657136, 686560, 821420, 961184, 1149988, 1201480, 1314272, 1437485, 1642840, 2012479, 2299976, 2402960, 2874970, 3285680, 4024958, 4599952, 4805920, 5749940, 6571360, 8049916, 9199904, 10062395, 11499880, 16099832, 20124790, 22999760, 32199664, 40249580, 45999520, 64399328, 80499160, 160998320, 321996640]

約数ペア:

[(1, 321996640), (2, 160998320), (4, 80499160), (5, 64399328), (7, 45999520), (8, 40249580), (10, 32199664), (14, 22999760), (16, 20124790), (20, 16099832), (28, 11499880), (32, 10062395), (35, 9199904), (40, 8049916), (49, 6571360), (56, 5749940), (67, 4805920), (70, 4599952), (80, 4024958), (98, 3285680), (112, 2874970), (134, 2402960), (140, 2299976), (160, 2012479), (196, 1642840), (224, 1437485), (245, 1314272), (268, 1201480), (280, 1149988), (335, 961184), (392, 821420), (469, 686560), (490, 657136), (536, 600740), (560, 574994), (613, 525280), (670, 480592), (784, 410710), (938, 343280), (980, 328568), (1072, 300370), (1120, 287497), (1226, 262640), (1340, 240296), (1568, 205355), (1876, 171640), (1960, 164284), (2144, 150185), (2345, 137312), (2452, 131320), (2680, 120148), (3065, 105056), (3283, 98080), (3752, 85820), (3920, 82142), (4291, 75040), (4690, 68656), (4904, 65660), (5360, 60074), (6130, 52528), (6566, 49040), (7504, 42910), (7840, 41071), (8582, 37520), (9380, 34328), (9808, 32830), (10720, 30037), (12260, 26264), (13132, 24520), (15008, 21455), (16415, 19616), (17164, 18760)]