18997005

素因数分解:

$3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{4507}}^1$

素因数の和:4796

約数の個数: 16

約数和(自身を含む): 30510144

約数和(自身を除く): 11513139

約数列:

[1, 3, 5, 15, 281, 843, 1405, 4215, 4507, 13521, 22535, 67605, 1266467, 3799401, 6332335, 18997005]

約数ペア:

[(1, 18997005), (3, 6332335), (5, 3799401), (15, 1266467), (281, 67605), (843, 22535), (1405, 13521), (4215, 4507)]