21176925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 46187520

約数和(自身を除く): 25010595

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 25, 33, 35, 55, 57, 75, 77, 95, 105, 133, 165, 175, 193, 209, 231, 275, 285, 385, 399, 475, 525, 579, 627, 665, 825, 965, 1045, 1155, 1351, 1425, 1463, 1925, 1995, 2123, 2895, 3135, 3325, 3667, 4053, 4389, 4825, 5225, 5775, 6369, 6755, 7315, 9975, 10615, 11001, 14475, 14861, 15675, 18335, 20265, 21945, 25669, 31845, 33775, 36575, 40337, 44583, 53075, 55005, 74305, 77007, 91675, 101325, 109725, 121011, 128345, 159225, 201685, 222915, 275025, 282359, 371525, 385035, 605055, 641725, 847077, 1008425, 1114575, 1411795, 1925175, 3025275, 4235385, 7058975, 21176925]

約数ペア:

[(1, 21176925), (3, 7058975), (5, 4235385), (7, 3025275), (11, 1925175), (15, 1411795), (19, 1114575), (21, 1008425), (25, 847077), (33, 641725), (35, 605055), (55, 385035), (57, 371525), (75, 282359), (77, 275025), (95, 222915), (105, 201685), (133, 159225), (165, 128345), (175, 121011), (193, 109725), (209, 101325), (231, 91675), (275, 77007), (285, 74305), (385, 55005), (399, 53075), (475, 44583), (525, 40337), (579, 36575), (627, 33775), (665, 31845), (825, 25669), (965, 21945), (1045, 20265), (1155, 18335), (1351, 15675), (1425, 14861), (1463, 14475), (1925, 11001), (1995, 10615), (2123, 9975), (2895, 7315), (3135, 6755), (3325, 6369), (3667, 5775), (4053, 5225), (4389, 4825)]