20438285

素因数分解:

$5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{911}}^1$

素因数の和:1564

約数の個数: 16

約数和(自身を含む): 28104192

約数和(自身を除く): 7665907

約数列:

[1, 5, 7, 35, 641, 911, 3205, 4487, 4555, 6377, 22435, 31885, 583951, 2919755, 4087657, 20438285]

約数ペア:

[(1, 20438285), (5, 4087657), (7, 2919755), (35, 583951), (641, 31885), (911, 22435), (3205, 6377), (4487, 4555)]