21266495

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 26314848

約数和(自身を除く): 5048353

約数列:

[1, 5, 41, 205, 227, 457, 1135, 2285, 9307, 18737, 46535, 93685, 103739, 518695, 4253299, 21266495]

約数ペア:

[(1, 21266495), (5, 4253299), (41, 518695), (205, 103739), (227, 93685), (457, 46535), (1135, 18737), (2285, 9307)]