2721211205

素因数分解:

$5^1\times {\mathrm{41}}^2\times {\mathrm{569}}^2$

素因数の和:1225

約数の個数: 18

約数和(自身を含む): 3352933878

約数和(自身を除く): 631722673

約数列:

[1, 5, 41, 205, 569, 1681, 2845, 8405, 23329, 116645, 323761, 956489, 1618805, 4782445, 13274201, 66371005, 544242241, 2721211205]

約数ペア:

[(1, 2721211205), (5, 544242241), (41, 66371005), (205, 13274201), (569, 4782445), (1681, 1618805), (2845, 956489), (8405, 323761), (23329, 116645)]