81109120

素因数分解:

$2^7\times 5^1\times {\mathrm{126733}}^1$

素因数の和:126752

約数の個数: 32

約数和(自身を含む): 193903020

約数和(自身を除く): 112793900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126733, 253466, 506932, 633665, 1013864, 1267330, 2027728, 2534660, 4055456, 5069320, 8110912, 10138640, 16221824, 20277280, 40554560, 81109120]

約数ペア:

[(1, 81109120), (2, 40554560), (4, 20277280), (5, 16221824), (8, 10138640), (10, 8110912), (16, 5069320), (20, 4055456), (32, 2534660), (40, 2027728), (64, 1267330), (80, 1013864), (128, 633665), (160, 506932), (320, 253466), (640, 126733)]