20138687960

素因数分解:

$2^3\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{488329}}^1$

素因数の和:489371

約数の個数: 32

約数和(自身を含む): 45356090400

約数和(自身を除く): 25217402440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1031, 2062, 4124, 5155, 8248, 10310, 20620, 41240, 488329, 976658, 1953316, 2441645, 3906632, 4883290, 9766580, 19533160, 503467199, 1006934398, 2013868796, 2517335995, 4027737592, 5034671990, 10069343980, 20138687960]

約数ペア:

[(1, 20138687960), (2, 10069343980), (4, 5034671990), (5, 4027737592), (8, 2517335995), (10, 2013868796), (20, 1006934398), (40, 503467199), (1031, 19533160), (2062, 9766580), (4124, 4883290), (5155, 3906632), (8248, 2441645), (10310, 1953316), (20620, 976658), (41240, 488329)]