259901473540

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{65964841}}^1$

素因数の和:65965047

約数の個数: 24

約数和(自身を含む): 548563626072

約数和(自身を除く): 288662152532

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 65964841, 131929682, 263859364, 329824205, 659648410, 1319296820, 12995073677, 25990147354, 51980294708, 64975368385, 129950736770, 259901473540]

約数ペア:

[(1, 259901473540), (2, 129950736770), (4, 64975368385), (5, 51980294708), (10, 25990147354), (20, 12995073677), (197, 1319296820), (394, 659648410), (788, 329824205), (985, 263859364), (1970, 131929682), (3940, 65964841)]