20571002020

素因数分解:

$2^2\times 5^1\times {\mathrm{45691}}^1\times {\mathrm{22511}}^1$

素因数の和:68211

約数の個数: 24

約数和(自身を含む): 43201968768

約数和(自身を除く): 22630966748

約数列:

[1, 2, 4, 5, 10, 20, 22511, 45022, 45691, 90044, 91382, 112555, 182764, 225110, 228455, 450220, 456910, 913820, 1028550101, 2057100202, 4114200404, 5142750505, 10285501010, 20571002020]

約数ペア:

[(1, 20571002020), (2, 10285501010), (4, 5142750505), (5, 4114200404), (10, 2057100202), (20, 1028550101), (22511, 913820), (45022, 456910), (45691, 450220), (90044, 228455), (91382, 225110), (112555, 182764)]