21488605

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1260

約数の個数: 16

約数和(自身を含む): 26706240

約数和(自身を除く): 5217635

約数列:

[1, 5, 43, 89, 215, 445, 1123, 3827, 5615, 19135, 48289, 99947, 241445, 499735, 4297721, 21488605]

約数ペア:

[(1, 21488605), (5, 4297721), (43, 499735), (89, 241445), (215, 99947), (445, 48289), (1123, 19135), (3827, 5615)]