2053820

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{997}}^1$

素因数の和:1109

約数の個数: 24

約数和(自身を含む): 4359264

約数和(自身を除く): 2305444

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 997, 1030, 1994, 2060, 3988, 4985, 9970, 19940, 102691, 205382, 410764, 513455, 1026910, 2053820]

約数ペア:

[(1, 2053820), (2, 1026910), (4, 513455), (5, 410764), (10, 205382), (20, 102691), (103, 19940), (206, 9970), (412, 4985), (515, 3988), (997, 2060), (1030, 1994)]