1981811780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7622353}}^1$

素因数の和:7622375

約数の個数: 24

約数和(自身を含む): 4481944152

約数和(自身を除く): 2500132372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7622353, 15244706, 30489412, 38111765, 76223530, 99090589, 152447060, 198181178, 396362356, 495452945, 990905890, 1981811780]

約数ペア:

[(1, 1981811780), (2, 990905890), (4, 495452945), (5, 396362356), (10, 198181178), (13, 152447060), (20, 99090589), (26, 76223530), (52, 38111765), (65, 30489412), (130, 15244706), (260, 7622353)]