28784565

素因数分解:

$3^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 56

約数和(自身を含む): 53119800

約数和(自身を除く): 24335235

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 149, 159, 243, 265, 405, 447, 477, 729, 745, 795, 1215, 1341, 1431, 2235, 2385, 3645, 4023, 4293, 6705, 7155, 7897, 12069, 12879, 20115, 21465, 23691, 36207, 38637, 39485, 60345, 64395, 71073, 108621, 118455, 181035, 193185, 213219, 355365, 543105, 639657, 1066095, 1918971, 3198285, 5756913, 9594855, 28784565]

約数ペア:

[(1, 28784565), (3, 9594855), (5, 5756913), (9, 3198285), (15, 1918971), (27, 1066095), (45, 639657), (53, 543105), (81, 355365), (135, 213219), (149, 193185), (159, 181035), (243, 118455), (265, 108621), (405, 71073), (447, 64395), (477, 60345), (729, 39485), (745, 38637), (795, 36207), (1215, 23691), (1341, 21465), (1431, 20115), (2235, 12879), (2385, 12069), (3645, 7897), (4023, 7155), (4293, 6705)]