21500416

素因数分解:

$2^9\times 7^2\times {\mathrm{857}}^1$

素因数の和:889

約数の個数: 60

約数和(自身を含む): 50030838

約数和(自身を除く): 28530422

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 512, 784, 857, 896, 1568, 1714, 1792, 3136, 3428, 3584, 5999, 6272, 6856, 11998, 12544, 13712, 23996, 25088, 27424, 41993, 47992, 54848, 83986, 95984, 109696, 167972, 191968, 219392, 335944, 383936, 438784, 671888, 767872, 1343776, 1535744, 2687552, 3071488, 5375104, 10750208, 21500416]

約数ペア:

[(1, 21500416), (2, 10750208), (4, 5375104), (7, 3071488), (8, 2687552), (14, 1535744), (16, 1343776), (28, 767872), (32, 671888), (49, 438784), (56, 383936), (64, 335944), (98, 219392), (112, 191968), (128, 167972), (196, 109696), (224, 95984), (256, 83986), (392, 54848), (448, 47992), (512, 41993), (784, 27424), (857, 25088), (896, 23996), (1568, 13712), (1714, 12544), (1792, 11998), (3136, 6856), (3428, 6272), (3584, 5999)]