21057904

素因数分解:

$2^4\times 7^1\times {\mathrm{188017}}^1$

素因数の和:188032

約数の個数: 20

約数和(自身を含む): 46628464

約数和(自身を除く): 25570560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 188017, 376034, 752068, 1316119, 1504136, 2632238, 3008272, 5264476, 10528952, 21057904]

約数ペア:

[(1, 21057904), (2, 10528952), (4, 5264476), (7, 3008272), (8, 2632238), (14, 1504136), (16, 1316119), (28, 752068), (56, 376034), (112, 188017)]