21180078

素因数分解:

$2^1\times 3^2\times {\mathrm{1176671}}^1$

素因数の和:1176679

約数の個数: 12

約数和(自身を含む): 45890208

約数和(自身を除く): 24710130

約数列:

[1, 2, 3, 6, 9, 18, 1176671, 2353342, 3530013, 7060026, 10590039, 21180078]

約数ペア:

[(1, 21180078), (2, 10590039), (3, 7060026), (6, 3530013), (9, 2353342), (18, 1176671)]