20719660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79691}}^1$

素因数の和:79713

約数の個数: 24

約数和(自身を含む): 46858896

約数和(自身を除く): 26139236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79691, 159382, 318764, 398455, 796910, 1035983, 1593820, 2071966, 4143932, 5179915, 10359830, 20719660]

約数ペア:

[(1, 20719660), (2, 10359830), (4, 5179915), (5, 4143932), (10, 2071966), (13, 1593820), (20, 1035983), (26, 796910), (52, 398455), (65, 318764), (130, 159382), (260, 79691)]