2800780

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1069}}^1$

素因数の和:1209

約数の個数: 24

約数和(自身を含む): 5932080

約数和(自身を除く): 3131300

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1069, 1310, 2138, 2620, 4276, 5345, 10690, 21380, 140039, 280078, 560156, 700195, 1400390, 2800780]

約数ペア:

[(1, 2800780), (2, 1400390), (4, 700195), (5, 560156), (10, 280078), (20, 140039), (131, 21380), (262, 10690), (524, 5345), (655, 4276), (1069, 2620), (1310, 2138)]