20892879

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{613}}^1$

素因数の和:1167

約数の個数: 24

約数和(自身を含む): 34609952

約数和(自身を除く): 13717073

約数列:

[1, 3, 7, 9, 21, 63, 541, 613, 1623, 1839, 3787, 4291, 4869, 5517, 11361, 12873, 34083, 38619, 331633, 994899, 2321431, 2984697, 6964293, 20892879]

約数ペア:

[(1, 20892879), (3, 6964293), (7, 2984697), (9, 2321431), (21, 994899), (63, 331633), (541, 38619), (613, 34083), (1623, 12873), (1839, 11361), (3787, 5517), (4291, 4869)]