21320055

素因数分解:

$3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2837}}^1$

素因数の和:3015

約数の個数: 24

約数和(自身を含む): 37189152

約数和(自身を除く): 15869097

約数列:

[1, 3, 5, 9, 15, 45, 167, 501, 835, 1503, 2505, 2837, 7515, 8511, 14185, 25533, 42555, 127665, 473779, 1421337, 2368895, 4264011, 7106685, 21320055]

約数ペア:

[(1, 21320055), (3, 7106685), (5, 4264011), (9, 2368895), (15, 1421337), (45, 473779), (167, 127665), (501, 42555), (835, 25533), (1503, 14185), (2505, 8511), (2837, 7515)]