28420245

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{12889}}^1$

素因数の和:12914

約数の個数: 36

約数和(自身を含む): 57308940

約数和(自身を除く): 28888695

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 12889, 38667, 64445, 90223, 116001, 193335, 270669, 451115, 580005, 631561, 812007, 1353345, 1894683, 3157805, 4060035, 5684049, 9473415, 28420245]

約数ペア:

[(1, 28420245), (3, 9473415), (5, 5684049), (7, 4060035), (9, 3157805), (15, 1894683), (21, 1353345), (35, 812007), (45, 631561), (49, 580005), (63, 451115), (105, 270669), (147, 193335), (245, 116001), (315, 90223), (441, 64445), (735, 38667), (2205, 12889)]