20442140

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5647}}^1$

素因数の和:5837

約数の個数: 24

約数和(自身を含む): 43173312

約数和(自身を除く): 22731172

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5647, 11294, 22588, 28235, 56470, 112940, 1022107, 2044214, 4088428, 5110535, 10221070, 20442140]

約数ペア:

[(1, 20442140), (2, 10221070), (4, 5110535), (5, 4088428), (10, 2044214), (20, 1022107), (181, 112940), (362, 56470), (724, 28235), (905, 22588), (1810, 11294), (3620, 5647)]