21756784

素因数分解:

$2^4\times 7^2\times {\mathrm{27751}}^1$

素因数の和:27773

約数の個数: 30

約数和(自身を含む): 49037784

約数和(自身を除く): 27281000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 27751, 55502, 111004, 194257, 222008, 388514, 444016, 777028, 1359799, 1554056, 2719598, 3108112, 5439196, 10878392, 21756784]

約数ペア:

[(1, 21756784), (2, 10878392), (4, 5439196), (7, 3108112), (8, 2719598), (14, 1554056), (16, 1359799), (28, 777028), (49, 444016), (56, 388514), (98, 222008), (112, 194257), (196, 111004), (392, 55502), (784, 27751)]