21452380

素因数分解:

$2^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{1297}}^1$

素因数の和:2133

約数の個数: 24

約数和(自身を含む): 45139248

約数和(自身を除く): 23686868

約数列:

[1, 2, 4, 5, 10, 20, 827, 1297, 1654, 2594, 3308, 4135, 5188, 6485, 8270, 12970, 16540, 25940, 1072619, 2145238, 4290476, 5363095, 10726190, 21452380]

約数ペア:

[(1, 21452380), (2, 10726190), (4, 5363095), (5, 4290476), (10, 2145238), (20, 1072619), (827, 25940), (1297, 16540), (1654, 12970), (2594, 8270), (3308, 6485), (4135, 5188)]