20160280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 52488000

約数和(自身を除く): 32327720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 809, 890, 1246, 1618, 1780, 2492, 3115, 3236, 3560, 4045, 4984, 5663, 6230, 6472, 8090, 11326, 12460, 16180, 22652, 24920, 28315, 32360, 45304, 56630, 72001, 113260, 144002, 226520, 288004, 360005, 504007, 576008, 720010, 1008014, 1440020, 2016028, 2520035, 2880040, 4032056, 5040070, 10080140, 20160280]

約数ペア:

[(1, 20160280), (2, 10080140), (4, 5040070), (5, 4032056), (7, 2880040), (8, 2520035), (10, 2016028), (14, 1440020), (20, 1008014), (28, 720010), (35, 576008), (40, 504007), (56, 360005), (70, 288004), (89, 226520), (140, 144002), (178, 113260), (280, 72001), (356, 56630), (445, 45304), (623, 32360), (712, 28315), (809, 24920), (890, 22652), (1246, 16180), (1618, 12460), (1780, 11326), (2492, 8090), (3115, 6472), (3236, 6230), (3560, 5663), (4045, 4984)]