208820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 449064

約数和(自身を除く): 240244

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 197, 212, 265, 394, 530, 788, 985, 1060, 1970, 3940, 10441, 20882, 41764, 52205, 104410, 208820]

約数ペア:

[(1, 208820), (2, 104410), (4, 52205), (5, 41764), (10, 20882), (20, 10441), (53, 3940), (106, 1970), (197, 1060), (212, 985), (265, 788), (394, 530)]