21311808

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 112

約数和(自身を含む): 65495424

約数和(自身を除く): 44183616

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 101, 112, 157, 168, 192, 202, 224, 303, 314, 336, 404, 448, 471, 606, 628, 672, 707, 808, 942, 1099, 1212, 1256, 1344, 1414, 1616, 1884, 2121, 2198, 2424, 2512, 2828, 3232, 3297, 3768, 4242, 4396, 4848, 5024, 5656, 6464, 6594, 7536, 8484, 8792, 9696, 10048, 11312, 13188, 15072, 15857, 16968, 17584, 19392, 22624, 26376, 30144, 31714, 33936, 35168, 45248, 47571, 52752, 63428, 67872, 70336, 95142, 105504, 110999, 126856, 135744, 190284, 211008, 221998, 253712, 332997, 380568, 443996, 507424, 665994, 761136, 887992, 1014848, 1331988, 1522272, 1775984, 2663976, 3044544, 3551968, 5327952, 7103936, 10655904, 21311808]

約数ペア:

[(1, 21311808), (2, 10655904), (3, 7103936), (4, 5327952), (6, 3551968), (7, 3044544), (8, 2663976), (12, 1775984), (14, 1522272), (16, 1331988), (21, 1014848), (24, 887992), (28, 761136), (32, 665994), (42, 507424), (48, 443996), (56, 380568), (64, 332997), (84, 253712), (96, 221998), (101, 211008), (112, 190284), (157, 135744), (168, 126856), (192, 110999), (202, 105504), (224, 95142), (303, 70336), (314, 67872), (336, 63428), (404, 52752), (448, 47571), (471, 45248), (606, 35168), (628, 33936), (672, 31714), (707, 30144), (808, 26376), (942, 22624), (1099, 19392), (1212, 17584), (1256, 16968), (1344, 15857), (1414, 15072), (1616, 13188), (1884, 11312), (2121, 10048), (2198, 9696), (2424, 8792), (2512, 8484), (2828, 7536), (3232, 6594), (3297, 6464), (3768, 5656), (4242, 5024), (4396, 4848)]