19881265

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1039}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 24710400

約数和(自身を除く): 4829135

約数列:

[1, 5, 43, 89, 215, 445, 1039, 3827, 5195, 19135, 44677, 92471, 223385, 462355, 3976253, 19881265]

約数ペア:

[(1, 19881265), (5, 3976253), (43, 462355), (89, 223385), (215, 92471), (445, 44677), (1039, 19135), (3827, 5195)]