18978459

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1\times {\mathrm{479}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 25989120

約数和(自身を除く): 7010661

約数列:

[1, 3, 47, 141, 281, 479, 843, 1437, 13207, 22513, 39621, 67539, 134599, 403797, 6326153, 18978459]

約数ペア:

[(1, 18978459), (3, 6326153), (47, 403797), (141, 134599), (281, 67539), (479, 39621), (843, 22513), (1437, 13207)]