18418659

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1171}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 28859328

約数和(自身を除く): 10440669

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 749, 1171, 2247, 3513, 5243, 8197, 15729, 24591, 57379, 125297, 172137, 375891, 877079, 2631237, 6139553, 18418659]

約数ペア:

[(1, 18418659), (3, 6139553), (7, 2631237), (21, 877079), (49, 375891), (107, 172137), (147, 125297), (321, 57379), (749, 24591), (1171, 15729), (2247, 8197), (3513, 5243)]