289440040

素因数分解:

$2^3\times 5^1\times {\mathrm{7236001}}^1$

素因数の和:7236012

約数の個数: 16

約数和(自身を含む): 651240180

約数和(自身を除く): 361800140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7236001, 14472002, 28944004, 36180005, 57888008, 72360010, 144720020, 289440040]

約数ペア:

[(1, 289440040), (2, 144720020), (4, 72360010), (5, 57888008), (8, 36180005), (10, 28944004), (20, 14472002), (40, 7236001)]