21903196

素因数分解:

$2^2\times 7^2\times {\mathrm{111751}}^1$

素因数の和:111769

約数の個数: 18

約数和(自身を含む): 44589048

約数和(自身を除く): 22685852

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 111751, 223502, 447004, 782257, 1564514, 3129028, 5475799, 10951598, 21903196]

約数ペア:

[(1, 21903196), (2, 10951598), (4, 5475799), (7, 3129028), (14, 1564514), (28, 782257), (49, 447004), (98, 223502), (196, 111751)]