20638655

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2441}}^1$

素因数の和:2554

約数の個数: 16

約数和(自身を含む): 26373600

約数和(自身を除く): 5734945

約数列:

[1, 5, 19, 89, 95, 445, 1691, 2441, 8455, 12205, 46379, 217249, 231895, 1086245, 4127731, 20638655]

約数ペア:

[(1, 20638655), (5, 4127731), (19, 1086245), (89, 231895), (95, 217249), (445, 46379), (1691, 12205), (2441, 8455)]