21382160

素因数分解:

$2^4\times 5^1\times {\mathrm{267277}}^1$

素因数の和:267290

約数の個数: 20

約数和(自身を含む): 49713708

約数和(自身を除く): 28331548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267277, 534554, 1069108, 1336385, 2138216, 2672770, 4276432, 5345540, 10691080, 21382160]

約数ペア:

[(1, 21382160), (2, 10691080), (4, 5345540), (5, 4276432), (8, 2672770), (10, 2138216), (16, 1336385), (20, 1069108), (40, 534554), (80, 267277)]