21729904

素因数分解:

$2^4\times 7^1\times {\mathrm{194017}}^1$

素因数の和:194032

約数の個数: 20

約数和(自身を含む): 48116464

約数和(自身を除く): 26386560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194017, 388034, 776068, 1358119, 1552136, 2716238, 3104272, 5432476, 10864952, 21729904]

約数ペア:

[(1, 21729904), (2, 10864952), (4, 5432476), (7, 3104272), (8, 2716238), (14, 1552136), (16, 1358119), (28, 776068), (56, 388034), (112, 194017)]