20520320

素因数分解:

$2^7\times 5^1\times {\mathrm{32063}}^1$

素因数の和:32082

約数の個数: 32

約数和(自身を含む): 49057920

約数和(自身を除く): 28537600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32063, 64126, 128252, 160315, 256504, 320630, 513008, 641260, 1026016, 1282520, 2052032, 2565040, 4104064, 5130080, 10260160, 20520320]

約数ペア:

[(1, 20520320), (2, 10260160), (4, 5130080), (5, 4104064), (8, 2565040), (10, 2052032), (16, 1282520), (20, 1026016), (32, 641260), (40, 513008), (64, 320630), (80, 256504), (128, 160315), (160, 128252), (320, 64126), (640, 32063)]