18520780

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7069}}^1$

素因数の和:7209

約数の個数: 24

約数和(自身を含む): 39196080

約数和(自身を除く): 20675300

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7069, 14138, 28276, 35345, 70690, 141380, 926039, 1852078, 3704156, 4630195, 9260390, 18520780]

約数ペア:

[(1, 18520780), (2, 9260390), (4, 4630195), (5, 3704156), (10, 1852078), (20, 926039), (131, 141380), (262, 70690), (524, 35345), (655, 28276), (1310, 14138), (2620, 7069)]