1989065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 2612736

約数和(自身を除く): 623671

約数列:

[1, 5, 13, 65, 71, 355, 431, 923, 2155, 4615, 5603, 28015, 30601, 153005, 397813, 1989065]

約数ペア:

[(1, 1989065), (5, 397813), (13, 153005), (65, 30601), (71, 28015), (355, 5603), (431, 4615), (923, 2155)]