20178256

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2689}}^1$

素因数の和:2771

約数の個数: 40

約数和(自身を含む): 45364160

約数和(自身を除く): 25185904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2689, 3752, 5378, 7504, 10756, 18823, 21512, 37646, 43024, 75292, 150584, 180163, 301168, 360326, 720652, 1261141, 1441304, 2522282, 2882608, 5044564, 10089128, 20178256]

約数ペア:

[(1, 20178256), (2, 10089128), (4, 5044564), (7, 2882608), (8, 2522282), (14, 1441304), (16, 1261141), (28, 720652), (56, 360326), (67, 301168), (112, 180163), (134, 150584), (268, 75292), (469, 43024), (536, 37646), (938, 21512), (1072, 18823), (1876, 10756), (2689, 7504), (3752, 5378)]