21055888

素因数分解:

$2^4\times 7^2\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 60

約数和(自身を含む): 48090672

約数和(自身を除く): 27034784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 107, 112, 196, 214, 251, 392, 428, 502, 749, 784, 856, 1004, 1498, 1712, 1757, 2008, 2996, 3514, 4016, 5243, 5992, 7028, 10486, 11984, 12299, 14056, 20972, 24598, 26857, 28112, 41944, 49196, 53714, 83888, 98392, 107428, 187999, 196784, 214856, 375998, 429712, 751996, 1315993, 1503992, 2631986, 3007984, 5263972, 10527944, 21055888]

約数ペア:

[(1, 21055888), (2, 10527944), (4, 5263972), (7, 3007984), (8, 2631986), (14, 1503992), (16, 1315993), (28, 751996), (49, 429712), (56, 375998), (98, 214856), (107, 196784), (112, 187999), (196, 107428), (214, 98392), (251, 83888), (392, 53714), (428, 49196), (502, 41944), (749, 28112), (784, 26857), (856, 24598), (1004, 20972), (1498, 14056), (1712, 12299), (1757, 11984), (2008, 10486), (2996, 7028), (3514, 5992), (4016, 5243)]