816338840

素因数分解:

$2^3\times 5^1\times {\mathrm{20408471}}^1$

素因数の和:20408482

約数の個数: 16

約数和(自身を含む): 1836762480

約数和(自身を除く): 1020423640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20408471, 40816942, 81633884, 102042355, 163267768, 204084710, 408169420, 816338840]

約数ペア:

[(1, 816338840), (2, 408169420), (4, 204084710), (5, 163267768), (8, 102042355), (10, 81633884), (20, 40816942), (40, 20408471)]