28304965

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 40582080

約数和(自身を除く): 12277115

約数列:

[1, 5, 13, 19, 41, 43, 65, 95, 169, 205, 215, 247, 533, 559, 779, 817, 845, 1235, 1763, 2665, 2795, 3211, 3895, 4085, 6929, 7267, 8815, 10127, 10621, 16055, 22919, 33497, 34645, 36335, 50635, 53105, 114595, 131651, 138073, 167485, 297947, 435461, 658255, 690365, 1489735, 2177305, 5660993, 28304965]

約数ペア:

[(1, 28304965), (5, 5660993), (13, 2177305), (19, 1489735), (41, 690365), (43, 658255), (65, 435461), (95, 297947), (169, 167485), (205, 138073), (215, 131651), (247, 114595), (533, 53105), (559, 50635), (779, 36335), (817, 34645), (845, 33497), (1235, 22919), (1763, 16055), (2665, 10621), (2795, 10127), (3211, 8815), (3895, 7267), (4085, 6929)]