28985480

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2887}}^1$

素因数の和:3149

約数の個数: 32

約数和(自身を含む): 65499840

約数和(自身を除く): 36514360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 2887, 5020, 5774, 10040, 11548, 14435, 23096, 28870, 57740, 115480, 724637, 1449274, 2898548, 3623185, 5797096, 7246370, 14492740, 28985480]

約数ペア:

[(1, 28985480), (2, 14492740), (4, 7246370), (5, 5797096), (8, 3623185), (10, 2898548), (20, 1449274), (40, 724637), (251, 115480), (502, 57740), (1004, 28870), (1255, 23096), (2008, 14435), (2510, 11548), (2887, 10040), (5020, 5774)]