21503552

素因数分解:

$2^6\times 7^2\times {\mathrm{6857}}^1$

素因数の和:6883

約数の個数: 42

約数和(自身を含む): 49645062

約数和(自身を除く): 28141510

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 196, 224, 392, 448, 784, 1568, 3136, 6857, 13714, 27428, 47999, 54856, 95998, 109712, 191996, 219424, 335993, 383992, 438848, 671986, 767984, 1343972, 1535968, 2687944, 3071936, 5375888, 10751776, 21503552]

約数ペア:

[(1, 21503552), (2, 10751776), (4, 5375888), (7, 3071936), (8, 2687944), (14, 1535968), (16, 1343972), (28, 767984), (32, 671986), (49, 438848), (56, 383992), (64, 335993), (98, 219424), (112, 191996), (196, 109712), (224, 95998), (392, 54856), (448, 47999), (784, 27428), (1568, 13714), (3136, 6857)]