21516448

素因数分解:

$2^5\times {\mathrm{509}}^1\times {\mathrm{1321}}^1$

素因数の和:1840

約数の個数: 24

約数和(自身を含む): 42475860

約数和(自身を除く): 20959412

約数列:

[1, 2, 4, 8, 16, 32, 509, 1018, 1321, 2036, 2642, 4072, 5284, 8144, 10568, 16288, 21136, 42272, 672389, 1344778, 2689556, 5379112, 10758224, 21516448]

約数ペア:

[(1, 21516448), (2, 10758224), (4, 5379112), (8, 2689556), (16, 1344778), (32, 672389), (509, 42272), (1018, 21136), (1321, 16288), (2036, 10568), (2642, 8144), (4072, 5284)]