81263140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25237}}^1$

素因数の和:25276

約数の個数: 48

約数和(自身を含む): 203519232

約数和(自身を除く): 122256092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 25237, 50474, 100948, 126185, 176659, 252370, 353318, 504740, 580451, 706636, 883295, 1160902, 1766590, 2321804, 2902255, 3533180, 4063157, 5804510, 8126314, 11609020, 16252628, 20315785, 40631570, 81263140]

約数ペア:

[(1, 81263140), (2, 40631570), (4, 20315785), (5, 16252628), (7, 11609020), (10, 8126314), (14, 5804510), (20, 4063157), (23, 3533180), (28, 2902255), (35, 2321804), (46, 1766590), (70, 1160902), (92, 883295), (115, 706636), (140, 580451), (161, 504740), (230, 353318), (322, 252370), (460, 176659), (644, 126185), (805, 100948), (1610, 50474), (3220, 25237)]