21090816

素因数分解:

$2^9\times 3^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:246

約数の個数: 120

約数和(自身を含む): 63835200

約数和(自身を除く): 42744384

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 32, 36, 46, 48, 64, 69, 72, 92, 96, 128, 138, 144, 184, 192, 199, 207, 256, 276, 288, 368, 384, 398, 414, 512, 552, 576, 597, 736, 768, 796, 828, 1104, 1152, 1194, 1472, 1536, 1592, 1656, 1791, 2208, 2304, 2388, 2944, 3184, 3312, 3582, 4416, 4577, 4608, 4776, 5888, 6368, 6624, 7164, 8832, 9154, 9552, 11776, 12736, 13248, 13731, 14328, 17664, 18308, 19104, 25472, 26496, 27462, 28656, 35328, 36616, 38208, 41193, 50944, 52992, 54924, 57312, 73232, 76416, 82386, 101888, 105984, 109848, 114624, 146464, 152832, 164772, 219696, 229248, 292928, 305664, 329544, 439392, 458496, 585856, 659088, 878784, 916992, 1171712, 1318176, 1757568, 2343424, 2636352, 3515136, 5272704, 7030272, 10545408, 21090816]

約数ペア:

[(1, 21090816), (2, 10545408), (3, 7030272), (4, 5272704), (6, 3515136), (8, 2636352), (9, 2343424), (12, 1757568), (16, 1318176), (18, 1171712), (23, 916992), (24, 878784), (32, 659088), (36, 585856), (46, 458496), (48, 439392), (64, 329544), (69, 305664), (72, 292928), (92, 229248), (96, 219696), (128, 164772), (138, 152832), (144, 146464), (184, 114624), (192, 109848), (199, 105984), (207, 101888), (256, 82386), (276, 76416), (288, 73232), (368, 57312), (384, 54924), (398, 52992), (414, 50944), (512, 41193), (552, 38208), (576, 36616), (597, 35328), (736, 28656), (768, 27462), (796, 26496), (828, 25472), (1104, 19104), (1152, 18308), (1194, 17664), (1472, 14328), (1536, 13731), (1592, 13248), (1656, 12736), (1791, 11776), (2208, 9552), (2304, 9154), (2388, 8832), (2944, 7164), (3184, 6624), (3312, 6368), (3582, 5888), (4416, 4776), (4577, 4608)]