19665891

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{577}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 32580704

約数和(自身を除く): 12914813

約数列:

[1, 3, 7, 9, 21, 63, 541, 577, 1623, 1731, 3787, 4039, 4869, 5193, 11361, 12117, 34083, 36351, 312157, 936471, 2185099, 2809413, 6555297, 19665891]

約数ペア:

[(1, 19665891), (3, 6555297), (7, 2809413), (9, 2185099), (21, 936471), (63, 312157), (541, 36351), (577, 34083), (1623, 12117), (1731, 11361), (3787, 5193), (4039, 4869)]