21050169

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18913}}^1$

素因数の和:18976

約数の個数: 16

約数和(自身を含む): 32683392

約数和(自身を除く): 11633223

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18913, 56739, 132391, 397173, 1002389, 3007167, 7016723, 21050169]

約数ペア:

[(1, 21050169), (3, 7016723), (7, 3007167), (21, 1002389), (53, 397173), (159, 132391), (371, 56739), (1113, 18913)]