20167749

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2039}}^1$

素因数の和:2209

約数の個数: 24

約数和(自身を含む): 33521280

約数和(自身を除く): 13353531

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 2039, 3297, 6117, 9891, 14273, 18351, 42819, 128457, 320123, 960369, 2240861, 2881107, 6722583, 20167749]

約数ペア:

[(1, 20167749), (3, 6722583), (7, 2881107), (9, 2240861), (21, 960369), (63, 320123), (157, 128457), (471, 42819), (1099, 18351), (1413, 14273), (2039, 9891), (3297, 6117)]