28907949

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 47278080

約数和(自身を除く): 18370131

約数列:

[1, 3, 7, 19, 21, 53, 57, 133, 159, 371, 399, 1007, 1113, 1367, 3021, 4101, 7049, 9569, 21147, 25973, 28707, 72451, 77919, 181811, 217353, 507157, 545433, 1376569, 1521471, 4129707, 9635983, 28907949]

約数ペア:

[(1, 28907949), (3, 9635983), (7, 4129707), (19, 1521471), (21, 1376569), (53, 545433), (57, 507157), (133, 217353), (159, 181811), (371, 77919), (399, 72451), (1007, 28707), (1113, 25973), (1367, 21147), (3021, 9569), (4101, 7049)]