20343422780

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2486971}}^1$

素因数の和:2487389

約数の個数: 24

約数和(自身を含む): 42825657840

約数和(自身を除く): 22482235060

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 2486971, 4973942, 9947884, 12434855, 24869710, 49739420, 1017171139, 2034342278, 4068684556, 5085855695, 10171711390, 20343422780]

約数ペア:

[(1, 20343422780), (2, 10171711390), (4, 5085855695), (5, 4068684556), (10, 2034342278), (20, 1017171139), (409, 49739420), (818, 24869710), (1636, 12434855), (2045, 9947884), (4090, 4973942), (8180, 2486971)]