20818640

素因数分解:

$2^4\times 5^1\times {\mathrm{433}}^1\times {\mathrm{601}}^1$

素因数の和:1047

約数の個数: 40

約数和(自身を含む): 48595848

約数和(自身を除く): 27777208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 433, 601, 866, 1202, 1732, 2165, 2404, 3005, 3464, 4330, 4808, 6010, 6928, 8660, 9616, 12020, 17320, 24040, 34640, 48080, 260233, 520466, 1040932, 1301165, 2081864, 2602330, 4163728, 5204660, 10409320, 20818640]

約数ペア:

[(1, 20818640), (2, 10409320), (4, 5204660), (5, 4163728), (8, 2602330), (10, 2081864), (16, 1301165), (20, 1040932), (40, 520466), (80, 260233), (433, 48080), (601, 34640), (866, 24040), (1202, 17320), (1732, 12020), (2165, 9616), (2404, 8660), (3005, 6928), (3464, 6010), (4330, 4808)]