28813215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{313}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 51681888

約数和(自身を除く): 22868673

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 313, 323, 361, 939, 969, 1083, 1565, 1615, 1805, 4695, 4845, 5321, 5415, 5947, 6137, 15963, 17841, 18411, 26605, 29735, 30685, 79815, 89205, 92055, 101099, 112993, 303297, 338979, 505495, 564965, 1516485, 1694895, 1920881, 5762643, 9604405, 28813215]

約数ペア:

[(1, 28813215), (3, 9604405), (5, 5762643), (15, 1920881), (17, 1694895), (19, 1516485), (51, 564965), (57, 505495), (85, 338979), (95, 303297), (255, 112993), (285, 101099), (313, 92055), (323, 89205), (361, 79815), (939, 30685), (969, 29735), (1083, 26605), (1565, 18411), (1615, 17841), (1805, 15963), (4695, 6137), (4845, 5947), (5321, 5415)]