20512115885821

素因数分解:

$7^1\times {\mathrm{379}}^1\times {\mathrm{18973}}^1\times {\mathrm{407509}}^1$

素因数の和:426868

約数の個数: 16

約数和(自身を含む): 23505568009600

約数和(自身を除く): 2993452123779

約数列:

[1, 7, 379, 2653, 18973, 132811, 407509, 2852563, 7190767, 50335369, 154445911, 1081121377, 7731668257, 54121677799, 2930302269403, 20512115885821]

約数ペア:

[(1, 20512115885821), (7, 2930302269403), (379, 54121677799), (2653, 7731668257), (18973, 1081121377), (132811, 154445911), (407509, 50335369), (2852563, 7190767)]