28431879

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{19069}}^1$

素因数の和:19150

約数の個数: 16

約数和(自身を含む): 43937280

約数和(自身を除く): 15505401

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 19069, 57207, 133483, 400449, 1353899, 4061697, 9477293, 28431879]

約数ペア:

[(1, 28431879), (3, 9477293), (7, 4061697), (21, 1353899), (71, 400449), (213, 133483), (497, 57207), (1491, 19069)]