1640890004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{77153}}^1$

素因数の和:77579

約数の個数: 24

約数和(自身を含む): 3100047720

約数和(自身を除く): 1459157716

約数列:

[1, 2, 4, 13, 26, 52, 409, 818, 1636, 5317, 10634, 21268, 77153, 154306, 308612, 1002989, 2005978, 4011956, 31555577, 63111154, 126222308, 410222501, 820445002, 1640890004]

約数ペア:

[(1, 1640890004), (2, 820445002), (4, 410222501), (13, 126222308), (26, 63111154), (52, 31555577), (409, 4011956), (818, 2005978), (1636, 1002989), (5317, 308612), (10634, 154306), (21268, 77153)]