28827009

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{18731}}^1$

素因数の和:18762

約数の個数: 20

約数和(自身を含む): 45331440

約数和(自身を除く): 16504431

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 18731, 56193, 168579, 355889, 505737, 1067667, 1517211, 3203001, 9609003, 28827009]

約数ペア:

[(1, 28827009), (3, 9609003), (9, 3203001), (19, 1517211), (27, 1067667), (57, 505737), (81, 355889), (171, 168579), (513, 56193), (1539, 18731)]