27987921

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{18401}}^1$

素因数の和:18433

約数の個数: 18

約数和(自身を含む): 43778358

約数和(自身を除く): 15790437

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 18401, 55203, 165609, 239213, 717639, 2152917, 3109769, 9329307, 27987921]

約数ペア:

[(1, 27987921), (3, 9329307), (9, 3109769), (13, 2152917), (39, 717639), (117, 239213), (169, 165609), (507, 55203), (1521, 18401)]