20542949

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 24245760

約数和(自身を除く): 3702811

約数列:

[1, 7, 43, 139, 301, 491, 973, 3437, 5977, 21113, 41839, 68249, 147791, 477743, 2934707, 20542949]

約数ペア:

[(1, 20542949), (7, 2934707), (43, 477743), (139, 147791), (301, 68249), (491, 41839), (973, 21113), (3437, 5977)]