21815139

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{1109}}^1$

素因数の和:1274

約数の個数: 16

約数和(自身を含む): 29836800

約数和(自身を除く): 8021661

約数列:

[1, 3, 79, 83, 237, 249, 1109, 3327, 6557, 19671, 87611, 92047, 262833, 276141, 7271713, 21815139]

約数ペア:

[(1, 21815139), (3, 7271713), (79, 276141), (83, 262833), (237, 92047), (249, 87611), (1109, 19671), (3327, 6557)]