258926409

素因数分解:

$3^3\times 7^1\times {\mathrm{1369981}}^1$

素因数の和:1369997

約数の個数: 16

約数和(自身を含む): 438394240

約数和(自身を除く): 179467831

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1369981, 4109943, 9589867, 12329829, 28769601, 36989487, 86308803, 258926409]

約数ペア:

[(1, 258926409), (3, 86308803), (7, 36989487), (9, 28769601), (21, 12329829), (27, 9589867), (63, 4109943), (189, 1369981)]