21070900

素因数分解:

$2^2\times 5^2\times {\mathrm{210709}}^1$

素因数の和:210723

約数の個数: 18

約数和(自身を含む): 45724070

約数和(自身を除く): 24653170

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210709, 421418, 842836, 1053545, 2107090, 4214180, 5267725, 10535450, 21070900]

約数ペア:

[(1, 21070900), (2, 10535450), (4, 5267725), (5, 4214180), (10, 2107090), (20, 1053545), (25, 842836), (50, 421418), (100, 210709)]