206819980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{116191}}^1$

素因数の和:116289

約数の個数: 24

約数和(自身を含む): 439205760

約数和(自身を除く): 232385780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 116191, 232382, 464764, 580955, 1161910, 2323820, 10340999, 20681998, 41363996, 51704995, 103409990, 206819980]

約数ペア:

[(1, 206819980), (2, 103409990), (4, 51704995), (5, 41363996), (10, 20681998), (20, 10340999), (89, 2323820), (178, 1161910), (356, 580955), (445, 464764), (890, 232382), (1780, 116191)]