205220360

素因数分解:

$2^3\times 5^1\times {\mathrm{5130509}}^1$

素因数の和:5130520

約数の個数: 16

約数和(自身を含む): 461745900

約数和(自身を除く): 256525540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5130509, 10261018, 20522036, 25652545, 41044072, 51305090, 102610180, 205220360]

約数ペア:

[(1, 205220360), (2, 102610180), (4, 51305090), (5, 41044072), (8, 25652545), (10, 20522036), (20, 10261018), (40, 5130509)]