21719259

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{7247}}^1$

素因数の和:7296

約数の個数: 20

約数和(自身を含む): 33326304

約数和(自身を除く): 11607045

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 7247, 21741, 65223, 195669, 268139, 587007, 804417, 2413251, 7239753, 21719259]

約数ペア:

[(1, 21719259), (3, 7239753), (9, 2413251), (27, 804417), (37, 587007), (81, 268139), (111, 195669), (333, 65223), (999, 21741), (2997, 7247)]