139607680

素因数分解:

$2^7\times 5^1\times {\mathrm{218137}}^1$

素因数の和:218156

約数の個数: 32

約数和(自身を含む): 333751140

約数和(自身を除く): 194143460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 218137, 436274, 872548, 1090685, 1745096, 2181370, 3490192, 4362740, 6980384, 8725480, 13960768, 17450960, 27921536, 34901920, 69803840, 139607680]

約数ペア:

[(1, 139607680), (2, 69803840), (4, 34901920), (5, 27921536), (8, 17450960), (10, 13960768), (16, 8725480), (20, 6980384), (32, 4362740), (40, 3490192), (64, 2181370), (80, 1745096), (128, 1090685), (160, 872548), (320, 436274), (640, 218137)]