28322255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 41477184

約数和(自身を除く): 13154929

約数列:

[1, 5, 13, 17, 19, 65, 71, 85, 95, 221, 247, 323, 355, 361, 923, 1105, 1207, 1235, 1349, 1615, 1805, 4199, 4615, 4693, 6035, 6137, 6745, 15691, 17537, 20995, 22933, 23465, 25631, 30685, 78455, 79781, 87685, 114665, 128155, 298129, 333203, 398905, 435727, 1490645, 1666015, 2178635, 5664451, 28322255]

約数ペア:

[(1, 28322255), (5, 5664451), (13, 2178635), (17, 1666015), (19, 1490645), (65, 435727), (71, 398905), (85, 333203), (95, 298129), (221, 128155), (247, 114665), (323, 87685), (355, 79781), (361, 78455), (923, 30685), (1105, 25631), (1207, 23465), (1235, 22933), (1349, 20995), (1615, 17537), (1805, 15691), (4199, 6745), (4615, 6137), (4693, 6035)]