20803940

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10099}}^1$

素因数の和:10211

約数の個数: 24

約数和(自身を含む): 44116800

約数和(自身を除く): 23312860

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10099, 20198, 40396, 50495, 100990, 201980, 1040197, 2080394, 4160788, 5200985, 10401970, 20803940]

約数ペア:

[(1, 20803940), (2, 10401970), (4, 5200985), (5, 4160788), (10, 2080394), (20, 1040197), (103, 201980), (206, 100990), (412, 50495), (515, 40396), (1030, 20198), (2060, 10099)]