21188164

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{2621}}^1$

素因数の和:2715

約数の個数: 24

約数和(自身を含む): 38763648

約数和(自身を除く): 17575484

約数列:

[1, 2, 4, 43, 47, 86, 94, 172, 188, 2021, 2621, 4042, 5242, 8084, 10484, 112703, 123187, 225406, 246374, 450812, 492748, 5297041, 10594082, 21188164]

約数ペア:

[(1, 21188164), (2, 10594082), (4, 5297041), (43, 492748), (47, 450812), (86, 246374), (94, 225406), (172, 123187), (188, 112703), (2021, 10484), (2621, 8084), (4042, 5242)]