208549780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{254329}}^1$

素因数の和:254379

約数の個数: 24

約数和(自身を含む): 448638120

約数和(自身を除く): 240088340

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 254329, 508658, 1017316, 1271645, 2543290, 5086580, 10427489, 20854978, 41709956, 52137445, 104274890, 208549780]

約数ペア:

[(1, 208549780), (2, 104274890), (4, 52137445), (5, 41709956), (10, 20854978), (20, 10427489), (41, 5086580), (82, 2543290), (164, 1271645), (205, 1017316), (410, 508658), (820, 254329)]