1991900735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{978821}}^1$

素因数の和:978874

約数の個数: 16

約数和(自身を含む): 2678056992

約数和(自身を除く): 686156257

約数列:

[1, 5, 11, 37, 55, 185, 407, 2035, 978821, 4894105, 10767031, 36216377, 53835155, 181081885, 398380147, 1991900735]

約数ペア:

[(1, 1991900735), (5, 398380147), (11, 181081885), (37, 53835155), (55, 36216377), (185, 10767031), (407, 4894105), (2035, 978821)]