172521805

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{269}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 225244800

約数和(自身を除く): 52722995

約数列:

[1, 5, 19, 43, 95, 157, 215, 269, 785, 817, 1345, 2983, 4085, 5111, 6751, 11567, 14915, 25555, 33755, 42233, 57835, 128269, 211165, 219773, 641345, 802427, 1098865, 1816019, 4012135, 9080095, 34504361, 172521805]

約数ペア:

[(1, 172521805), (5, 34504361), (19, 9080095), (43, 4012135), (95, 1816019), (157, 1098865), (215, 802427), (269, 641345), (785, 219773), (817, 211165), (1345, 128269), (2983, 57835), (4085, 42233), (5111, 33755), (6751, 25555), (11567, 14915)]