21151719

素因数分解:

$3^3\times {\mathrm{167}}^1\times {\mathrm{4691}}^1$

素因数の和:4867

約数の個数: 16

約数和(自身を含む): 31530240

約数和(自身を除く): 10378521

約数列:

[1, 3, 9, 27, 167, 501, 1503, 4509, 4691, 14073, 42219, 126657, 783397, 2350191, 7050573, 21151719]

約数ペア:

[(1, 21151719), (3, 7050573), (9, 2350191), (27, 783397), (167, 126657), (501, 42219), (1503, 14073), (4509, 4691)]