21318472

素因数分解:

$2^3\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1913}}^1$

素因数の和:2125

約数の個数: 32

約数和(自身を含む): 45936000

約数和(自身を除く): 24617528

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 199, 398, 796, 1393, 1592, 1913, 2786, 3826, 5572, 7652, 11144, 13391, 15304, 26782, 53564, 107128, 380687, 761374, 1522748, 2664809, 3045496, 5329618, 10659236, 21318472]

約数ペア:

[(1, 21318472), (2, 10659236), (4, 5329618), (7, 3045496), (8, 2664809), (14, 1522748), (28, 761374), (56, 380687), (199, 107128), (398, 53564), (796, 26782), (1393, 15304), (1592, 13391), (1913, 11144), (2786, 7652), (3826, 5572)]