161521520

素因数分解:

$2^4\times 5^1\times {\mathrm{2019019}}^1$

素因数の和:2019032

約数の個数: 20

約数和(自身を含む): 375537720

約数和(自身を除く): 214016200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2019019, 4038038, 8076076, 10095095, 16152152, 20190190, 32304304, 40380380, 80760760, 161521520]

約数ペア:

[(1, 161521520), (2, 80760760), (4, 40380380), (5, 32304304), (8, 20190190), (10, 16152152), (16, 10095095), (20, 8076076), (40, 4038038), (80, 2019019)]