85457720

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7603}}^1$

素因数の和:7895

約数の個数: 32

約数和(自身を含む): 192989520

約数和(自身を除く): 107531800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 7603, 11240, 15206, 30412, 38015, 60824, 76030, 152060, 304120, 2136443, 4272886, 8545772, 10682215, 17091544, 21364430, 42728860, 85457720]

約数ペア:

[(1, 85457720), (2, 42728860), (4, 21364430), (5, 17091544), (8, 10682215), (10, 8545772), (20, 4272886), (40, 2136443), (281, 304120), (562, 152060), (1124, 76030), (1405, 60824), (2248, 38015), (2810, 30412), (5620, 15206), (7603, 11240)]