81902020

素因数分解:

$2^2\times 5^1\times {\mathrm{1097}}^1\times {\mathrm{3733}}^1$

素因数の和:4839

約数の個数: 24

約数和(自身を含む): 172197144

約数和(自身を除く): 90295124

約数列:

[1, 2, 4, 5, 10, 20, 1097, 2194, 3733, 4388, 5485, 7466, 10970, 14932, 18665, 21940, 37330, 74660, 4095101, 8190202, 16380404, 20475505, 40951010, 81902020]

約数ペア:

[(1, 81902020), (2, 40951010), (4, 20475505), (5, 16380404), (10, 8190202), (20, 4095101), (1097, 74660), (2194, 37330), (3733, 21940), (4388, 18665), (5485, 14932), (7466, 10970)]