2643580

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1009}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 5599440

約数和(自身を除く): 2955860

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1009, 1310, 2018, 2620, 4036, 5045, 10090, 20180, 132179, 264358, 528716, 660895, 1321790, 2643580]

約数ペア:

[(1, 2643580), (2, 1321790), (4, 660895), (5, 528716), (10, 264358), (20, 132179), (131, 20180), (262, 10090), (524, 5045), (655, 4036), (1009, 2620), (1310, 2018)]