28907151

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5573}}^1$

素因数の和:5615

約数の個数: 32

約数和(自身を含む): 49943040

約数和(自身を除く): 21035889

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 5573, 16719, 39011, 72449, 105887, 117033, 217347, 317661, 507143, 741209, 1376531, 1521429, 2223627, 4129593, 9635717, 28907151]

約数ペア:

[(1, 28907151), (3, 9635717), (7, 4129593), (13, 2223627), (19, 1521429), (21, 1376531), (39, 741209), (57, 507143), (91, 317661), (133, 217347), (247, 117033), (273, 105887), (399, 72449), (741, 39011), (1729, 16719), (5187, 5573)]