208400540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{254147}}^1$

素因数の和:254197

約数の個数: 24

約数和(自身を含む): 448317072

約数和(自身を除く): 239916532

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 254147, 508294, 1016588, 1270735, 2541470, 5082940, 10420027, 20840054, 41680108, 52100135, 104200270, 208400540]

約数ペア:

[(1, 208400540), (2, 104200270), (4, 52100135), (5, 41680108), (10, 20840054), (20, 10420027), (41, 5082940), (82, 2541470), (164, 1270735), (205, 1016588), (410, 508294), (820, 254147)]