155607680

素因数分解:

$2^7\times 5^1\times {\mathrm{243137}}^1$

素因数の和:243156

約数の個数: 32

約数和(自身を含む): 372001140

約数和(自身を除く): 216393460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 243137, 486274, 972548, 1215685, 1945096, 2431370, 3890192, 4862740, 7780384, 9725480, 15560768, 19450960, 31121536, 38901920, 77803840, 155607680]

約数ペア:

[(1, 155607680), (2, 77803840), (4, 38901920), (5, 31121536), (8, 19450960), (10, 15560768), (16, 9725480), (20, 7780384), (32, 4862740), (40, 3890192), (64, 2431370), (80, 1945096), (128, 1215685), (160, 972548), (320, 486274), (640, 243137)]