400426560

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:821

約数の個数: 168

約数和(自身を含む): 1385215416

約数和(自身を除く): 984788856

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, 144, 160, 180, 192, 240, 257, 288, 320, 360, 480, 514, 541, 576, 720, 771, 960, 1028, 1082, 1285, 1440, 1542, 1623, 2056, 2164, 2313, 2570, 2705, 2880, 3084, 3246, 3855, 4112, 4328, 4626, 4869, 5140, 5410, 6168, 6492, 7710, 8115, 8224, 8656, 9252, 9738, 10280, 10820, 11565, 12336, 12984, 15420, 16230, 16448, 17312, 18504, 19476, 20560, 21640, 23130, 24345, 24672, 25968, 30840, 32460, 34624, 37008, 38952, 41120, 43280, 46260, 48690, 49344, 51936, 61680, 64920, 74016, 77904, 82240, 86560, 92520, 97380, 103872, 123360, 129840, 139037, 148032, 155808, 173120, 185040, 194760, 246720, 259680, 278074, 311616, 370080, 389520, 417111, 519360, 556148, 695185, 740160, 779040, 834222, 1112296, 1251333, 1390370, 1558080, 1668444, 2085555, 2224592, 2502666, 2780740, 3336888, 4171110, 4449184, 5005332, 5561480, 6256665, 6673776, 8342220, 8898368, 10010664, 11122960, 12513330, 13347552, 16684440, 20021328, 22245920, 25026660, 26695104, 33368880, 40042656, 44491840, 50053320, 66737760, 80085312, 100106640, 133475520, 200213280, 400426560]

約数ペア:

[(1, 400426560), (2, 200213280), (3, 133475520), (4, 100106640), (5, 80085312), (6, 66737760), (8, 50053320), (9, 44491840), (10, 40042656), (12, 33368880), (15, 26695104), (16, 25026660), (18, 22245920), (20, 20021328), (24, 16684440), (30, 13347552), (32, 12513330), (36, 11122960), (40, 10010664), (45, 8898368), (48, 8342220), (60, 6673776), (64, 6256665), (72, 5561480), (80, 5005332), (90, 4449184), (96, 4171110), (120, 3336888), (144, 2780740), (160, 2502666), (180, 2224592), (192, 2085555), (240, 1668444), (257, 1558080), (288, 1390370), (320, 1251333), (360, 1112296), (480, 834222), (514, 779040), (541, 740160), (576, 695185), (720, 556148), (771, 519360), (960, 417111), (1028, 389520), (1082, 370080), (1285, 311616), (1440, 278074), (1542, 259680), (1623, 246720), (2056, 194760), (2164, 185040), (2313, 173120), (2570, 155808), (2705, 148032), (2880, 139037), (3084, 129840), (3246, 123360), (3855, 103872), (4112, 97380), (4328, 92520), (4626, 86560), (4869, 82240), (5140, 77904), (5410, 74016), (6168, 64920), (6492, 61680), (7710, 51936), (8115, 49344), (8224, 48690), (8656, 46260), (9252, 43280), (9738, 41120), (10280, 38952), (10820, 37008), (11565, 34624), (12336, 32460), (12984, 30840), (15420, 25968), (16230, 24672), (16448, 24345), (17312, 23130), (18504, 21640), (19476, 20560)]