28805907

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 42771456

約数和(自身を除く): 13965549

約数列:

[1, 3, 13, 39, 71, 101, 103, 213, 303, 309, 923, 1313, 1339, 2769, 3939, 4017, 7171, 7313, 10403, 21513, 21939, 31209, 93223, 95069, 135239, 279669, 285207, 405717, 738613, 2215839, 9601969, 28805907]

約数ペア:

[(1, 28805907), (3, 9601969), (13, 2215839), (39, 738613), (71, 405717), (101, 285207), (103, 279669), (213, 135239), (303, 95069), (309, 93223), (923, 31209), (1313, 21939), (1339, 21513), (2769, 10403), (3939, 7313), (4017, 7171)]