21312543

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59699}}^1$

素因数の和:59726

約数の個数: 16

約数和(自身を含む): 34387200

約数和(自身を除く): 13074657

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 59699, 179097, 417893, 1014883, 1253679, 3044649, 7104181, 21312543]

約数ペア:

[(1, 21312543), (3, 7104181), (7, 3044649), (17, 1253679), (21, 1014883), (51, 417893), (119, 179097), (357, 59699)]