21254416

素因数分解:

$2^4\times {\mathrm{617}}^1\times {\mathrm{2153}}^1$

素因数の和:2778

約数の個数: 20

約数和(自身を含む): 41266332

約数和(自身を除く): 20011916

約数列:

[1, 2, 4, 8, 16, 617, 1234, 2153, 2468, 4306, 4936, 8612, 9872, 17224, 34448, 1328401, 2656802, 5313604, 10627208, 21254416]

約数ペア:

[(1, 21254416), (2, 10627208), (4, 5313604), (8, 2656802), (16, 1328401), (617, 34448), (1234, 17224), (2153, 9872), (2468, 8612), (4306, 4936)]