820200320

素因数分解:

$2^7\times 5^1\times {\mathrm{1281563}}^1$

素因数の和:1281582

約数の個数: 32

約数和(自身を含む): 1960792920

約数和(自身を除く): 1140592600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1281563, 2563126, 5126252, 6407815, 10252504, 12815630, 20505008, 25631260, 41010016, 51262520, 82020032, 102525040, 164040064, 205050080, 410100160, 820200320]

約数ペア:

[(1, 820200320), (2, 410100160), (4, 205050080), (5, 164040064), (8, 102525040), (10, 82020032), (16, 51262520), (20, 41010016), (32, 25631260), (40, 20505008), (64, 12815630), (80, 10252504), (128, 6407815), (160, 5126252), (320, 2563126), (640, 1281563)]