20802908

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18121}}^1$

素因数の和:18173

約数の個数: 24

約数和(自身を含む): 42622944

約数和(自身を除く): 21820036

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18121, 36242, 72484, 126847, 253694, 507388, 742961, 1485922, 2971844, 5200727, 10401454, 20802908]

約数ペア:

[(1, 20802908), (2, 10401454), (4, 5200727), (7, 2971844), (14, 1485922), (28, 742961), (41, 507388), (82, 253694), (164, 126847), (287, 72484), (574, 36242), (1148, 18121)]