21180866

素因数分解:

$2^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{11549}}^1$

素因数の和:11689

約数の個数: 16

約数和(自身を含む): 36590400

約数和(自身を除く): 15409534

約数列:

[1, 2, 7, 14, 131, 262, 917, 1834, 11549, 23098, 80843, 161686, 1512919, 3025838, 10590433, 21180866]

約数ペア:

[(1, 21180866), (2, 10590433), (7, 3025838), (14, 1512919), (131, 161686), (262, 80843), (917, 23098), (1834, 11549)]