9929721640

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1811993}}^1$

素因数の和:1812141

約数の個数: 32

約数和(自身を含む): 22504965480

約数和(自身を除く): 12575243840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 1811993, 3623986, 7247972, 9059965, 14495944, 18119930, 36239860, 72479720, 248243041, 496486082, 992972164, 1241215205, 1985944328, 2482430410, 4964860820, 9929721640]

約数ペア:

[(1, 9929721640), (2, 4964860820), (4, 2482430410), (5, 1985944328), (8, 1241215205), (10, 992972164), (20, 496486082), (40, 248243041), (137, 72479720), (274, 36239860), (548, 18119930), (685, 14495944), (1096, 9059965), (1370, 7247972), (2740, 3623986), (5480, 1811993)]