20188657640

素因数分解:

$2^3\times 5^1\times {\mathrm{504716441}}^1$

素因数の和:504716452

約数の個数: 16

約数和(自身を含む): 45424479780

約数和(自身を除く): 25235822140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504716441, 1009432882, 2018865764, 2523582205, 4037731528, 5047164410, 10094328820, 20188657640]

約数ペア:

[(1, 20188657640), (2, 10094328820), (4, 5047164410), (5, 4037731528), (8, 2523582205), (10, 2018865764), (20, 1009432882), (40, 504716441)]