21267547

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 25067520

約数和(自身を除く): 3799973

約数列:

[1, 7, 47, 127, 329, 509, 889, 3563, 5969, 23923, 41783, 64643, 167461, 452501, 3038221, 21267547]

約数ペア:

[(1, 21267547), (7, 3038221), (47, 452501), (127, 167461), (329, 64643), (509, 41783), (889, 23923), (3563, 5969)]